Electric entertainment for all the family ages 7+ Activity and information pack www.sciencemuseum.org.uk/liveontour Contents A letter from the Museum 3 A brief history of the Science Museum 4 The Science Museum Past, Present and Future 6 Mark Champkins Inventor in Residence 7 Stephenson’s Rocket fact file 8 Enigmatic energy 9 Potential energy 10 Paddle Power 11 Hydrogen-powered urban car fact file 13 Glorious gravity 14 Ball Blaster 15 V2 rocket fact file 16 Fantastic forces 17 Handy Hovercraft 18 SR-N1 hovercraft fact file 22 Super-Strong Friction 23 Marvellous materials 24 Separating Water 25 Teachers’ notes 27 Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 2 fact file Length of time at the Science Museum: 6 years Favourite object in the Museum: The Apollo 10 space capsule. I find it amazing that it has orbited the Moon. Name: Jean M Franczyk Best science fact: The only letter not appearing on the periodic table is the letter J. ur in ce Museum Live on To ien Sc d lle ca ow sh tic We have a fantas extend pack will help you to ity tiv ac is Th . UK e th theatres around inspiring classroom. It provides ur yo o int ow sh e th the themes from hande as lesson starters, us to as ide d an n io at activities, inform s place ve great learning take lie be e W . es iti tiv ac al outs and practic that we ve provided activities ha e w d an n fu g vin when you are ha . hope will do just that nse of to help people make se m ai e w , m eu us M ce At the Scien people e want to encourage W . es liv r ou es ap sh the science that n to our things work. In additio w ho r ve co dis d an to ask questions range ve a huge and diverse ha e w e, es th e lik es iti shows and activ e es that you can explor or st r ou in d an ay pl of objects on dis site. museum or to our web r ou to it vis a h ug ro th to enjoy e the Science Museum us to e inu nt co ill w u We hope yo ith your students. and discover science w Jean M Franczyk ience Museum Director of Learning, Sc Live on Tour! Activity and information pack www.sciencemuseum.org.uk/liveontour 3 A brief history of the Science Museum as an The Science Museum existence in en be institution has a half. d an ry for about a centu eat Gr the in s It has its origin Hyde in ld he , 51 Exhibition of 18 ing ild bu ss gla ge Park in the hu e. lac Pa al yst Cr known as the ience Art, antiquities and sc ts were jec ob g and engineerin new o int re moved from the ition hib Ex on y buildings nearb uth So the d Road and calle Kensington Museum. From 1862 major objects from the Patent Office Museum were displayed at the South Kensington Museum, including the steam locomotives Puffing Billy and Stephenson’s Rocket. These objects were formally transferred to the South Kensington Museum in 1883, bringing into the Museum’s collection some of its most famous objects. In 1909 the go vernment offic ially split the and science co art llections of th e South Kensi Museum. The ngton art collection remained in th original build e ings and was renamed the and Albert Mus Vi ct oria eum after the late queen an husband. But d her the science co llection moved new building into a across the ro ad and was gi name. The Sci ven a new ence Museum was finally bo rn. of the In December 1931, the then Director ned a ope ns, Lyo ry Museum, Colonel Sir Hen any in kind its of t children’s gallery, the firs ulate stim to was aim museum in the world. The nce scie in n dre chil of the interest and curiosity ve acti attr and ple and technology using sim king models. displays and a large number of wor Live on Tour! Activity and information pack www.sciencemuseum.org.uk/liveontour 4 The Second World Wa r closed the Museum completely, with most of the collection removed to storage away from Lo ndon. Some smaller objects from the collection were sto red in disused tunnels of the London Underground. The Museum didn’t properl y reopen until about 1950 . In 1976 the Science Museum acquired the Wellcome Collection of the History of Medicine on permanent loan. This collection of 113,000 objects includes microscopes, mummies and all sorts in-between. Launchpad, first opened in 1986, was another new development in the understanding of technology. By means of specially designed interactive ‘hands on’ exhibits, visitors, and especially children, k could discover the ways things wor through their own use of them. d gallery test Launchpa ever In 2007 the la and better than opened, bigger ho y uses w-look galler before. The ne illustrating ctive exhibits over 50 intera physical t concepts in many differen lable iners are avai science. Expla ts work, te how exhibi to demonstra d perform periments an public. conduct live ex d the visiting an s ol ho sc shows to At the start of a new millennium the Museum has expanded into a new extension called the Wellcome Wing, opened in June 2000 by HM the Queen. The Wellcome Wing houses exhibitions of present and future science and technology. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 5 The Science Museum’s Past, Present and Future The Science Museum has a collection of over 220,000 objects from the past which are looked after by Museum staff. But it is up to the inventors and scientists of the future to create the objects that will fill the Museum in the years to come. Let’s find out about a famous inventor of the past, a curator very much involved in the Museum’s present and an inventor who is hoping to influence the Museum’s future. James Watt was an inventor who helped power the Industrial Revolution. Several of his inventions and possessions are on display in the Science Museum. James Watt was born in Scotland in 1736 and lived until 1819. He was an inventor and engineer who spent much of his life using science to make money. He invented a new type of steam engine which is said to have sparked the Industrial Revolution. This was a time when lots of people’s lives changed dramatically; they moved from the countryside to cities and started to work in factories instead of on farms. James Watt started off as a scientific instrument-maker. It was this that brought his attention to the steam engine. He came across a model of an early engine used for teaching that needed to be repaired. Watt didn’t think it was very good and started experimenting with steam, temperature and engines. He eventually came up with a new design for an engine which worked much better, however, he didn’t have the money to produce it. Name: Ben Russell Length of time at the Science Museum: 12 years What is a curator? Someone who works in a museum or gallery looking after objects and putting them together in exhibitions to tell stories. What’s the best part of your job? Spending lots of time surrounded by old objects and moving big, heavy things around with fork-lift trucks. How did you become a curator? I studied history at school and just always wanted to work in museums. What’s your favourite object? One of the big old beam engines. These are huge factory engines that are run on steam and shaped like the letter T. What’s the strangest object you’ve seen in the collection? Somewhere hidden away in a drawer is a very old ceramic tile showing a man sitting in a field playing a flute and having a poo at the same time... So in 1774 Watt joined Matthew Boulton, who was a very powerful man in Birmingham, and they became friends. With Boulton’s money Watt finally developed and made his engine. The Science Museum has the oldest surviving engine built by Boulton and Watt. Watt’s engines and influence spread across the country. His steam engines pumped out mines and drove factories, and helped create new industrial areas all over the country. Britain was getting richer and people could buy all sorts of new products; from fancy clothing to nice looking plates and cups. Watt has been compared to Great Britons like Sir Isaac Newton and William Shakespeare. There was even a memorial to him placed in Westminster Abbey; the first one put there for an engineer. Its size was so great that the floor collapsed, revealing coffins buried underneath. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour What do you think is the biggest thing in the collection? There’s a big red mill engine in the middle of the Energy Hall at the Museum. It’s massive and weighs hundreds of tonnes. It used to power over 1700 power looms in a textile factory. Where do all of the objects come from? We collect objects from all over the place. Some things we buy because we think they are important, other people give us things or leave them to us after they die. My favourite story is of a curator digging up a dead body to retrieve an object from somebody’s coffin. Have you ever broken anything? I’ve never broken anything, but I once did drop an extremely old and valuable coin, the only one like it in the world. Unfortunately it didn’t belong to the Science Museum, but luckily for me it was OK! 6 Mark Champkins is the Inventor in Residence at the Science Museum When did you know you wanted to become an inventor? I always liked making things; it didn’t really feel like work. At home I’d be making go-karts and tree houses. In school I enjoyed lessons where you got to make something or use tools and machinery. I went into engineering and product design and they naturally combined to being an inventor. Which of your inventions are you most proud of? My self-heating crockery which uses the chemical found in hand warmers. You press a button and the crockery heats up and keeps your food warm. You can then put it in the dishwasher to recharge it with heat energy. How do you come up with your ideas? Firstly noticing things; noticing problems and noticing how things are made. When you do this it makes you more curious about why it’s done like that and if there is a better way to do it. Then you can start to think about combining two things that currently exist in a new way. I think a lot of my ideas have come about like that. Have you ever invented something that hasn’t worked? I think before any good invention you usually have to do lots of things that don’t work in order to get to the right solution. Who is your inventing idol? I like unlikely inventers. There’s a guy called Percy Shaw who invented cat’s eyes. He didn’t have a track record of inventing things but just had an amazing insight when he was driving. His headlights lit up the eyes of a cat and he realised the reflective ability of a sphere of glass. Does it help working in the Science Museum? It’s absolutely brilliant! It’s hard not to come up with ideas when you’re surrounded by so many. It’s quite humbling as well because it’s very rare that anybody comes along with an idea good enough to be in the Science Museum. What would like to invent that hasn’t been invented yet? Well the big thing at the moment is fusion; getting vast amounts of energy from nuclear reactions like those that take place in the Sun. It would wonderful to do something on a local level; if homes and cars could generate their own fusion. What are you working on at the moment? I’m making things for the Museum to sell. Some products show off scientific principles, like using magnets to make levitating cutlery. I’m also trying to make stationary more interesting. I had an idea recently about making a pencil with marks on it showing you how many words you’ve written once you’ve worn the pencil down to that level. I’m going to have to do lots of experiments and writing to find out! What would you say to a budding young inventor? You need to be very persistent, to keep noticing things and be inquisitive about things. Although it might drive adults crazy, I suggest you keep asking why things are the way they are. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour On the next page and throughout this activity pack you’ll find some cool fact files about our curators’ favourite objects. In the back of the pack you’ll find a blank fact file. You can print this off and have a go at curating yourself by creating your very own fact files on your favourite objects, whether they’re cars, clothes or computers. 7 Stephenson’s Rocket Fact file Key information Rocket was built by Robert Stephenson and Company in Newcastle and was the most advanced steam engine of its day. It was built for the Rainhill Trials, a competition to find the best steam engine for the brandnew Liverpool to Manchester railway. The Rocket was by far the best engine, bringing together lots of brand-new engineering innovations; this created the template for most steam locomotives since. Year built: 1829 Maximum speed: 56 km/h (35 mph) Mass: 4320 kg Fuel type: Coke/coal Best fact: During its working life Rocket was modified several times, so today it looks quite different from how it looked at the Rainhill Trials. Historical importance rating: 5/5 Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 8 Enigmatic energy Energy is an awesome thing – it makes our world work! But did you know it can’t be created or destroyed, only transformed from one kind to another? Let’s have a look at some different kinds of energy... Kinetic energy Things that move have kinetic energy. The heavier a thing is and the faster it moves, the more kinetic energy it has. Anything that moves has kinetic energy, including planets, people and even the atoms they’re made from! Chemical energy Lots of chemical reactions give off energy. For example, when something explodes, stored chemical energy is transferred to the surroundings as thermal energy, sound energy and kinetic energy. Thermal Energy (Heat Energy) Thermal energy is energy that comes from heat. Hot soup has thermal energy in the form of kinetic energy that comes from its particles vibrating – this is what heat really is. Some of this energy is transferred from the soup to the particles in the air around it as it’s left to cool. Light energy Light is made of tiny packets of energy that move in waves. Light comes from a source such as the Sun or light bulbs. It travels really fast in straight lines until it hits something, when some light is absorbed and some is reflected. This reflected light is how we see the things around us. When something absorbs light energy, it converts it into heat energy. Plants convert light energy into chemical energy in order to grow. Sound energy When a tuning fork vibrates it transfers energy to the air as sound. Kinetic energy from the moving air molecules transfers the sound energy to your eardrums. Nuclear energy Nuclear energy is released through fission, when atoms are split up; and fusion, when pairs of atoms are joined together. Nuclear power plants use fission to release energy and make electricity. Fusion occurs in the Sun and can release a lot more energy, so people are trying to develop fusion reactors to make electricity. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 9 Electrical energy When electric charges move in a wire an electric current flows. Electrical energy is very useful as it can be converted into many different types of energy. Toasters use a special wire to convert electrical energy into heat energy. In light bulbs, any heat that is produced is wasted energy, so an energy efficient bulb transfers less of its energy into heat and more into light energy. Magnetic energy Magnets create invisible magnetic fields. They fill the space around a magnet where the magnetic forces work. Magnetism and electricity are closely linked. When an electric current flows in a coil of wire it creates a magnetic field. We call this an electromagnet, a magnet that can be turned on and off. Power stations rotate a coil of wire in a magnetic field to produce an electric current. Potential energy Gravitational potential energy An object on a high shelf has lots of stored energy because of its position above the ground and the pull of gravity. This is called gravitational potential energy – it’s the energy that would be released if the object fell. If this happens, the gravitational potential energy is converted into kinetic energy. Elastic potential energy An elastic material, such as a spring, bouncy ball or elastic band, can change shape. Energy is needed to do this and that energy is stored as elastic potential energy in the material when it is stretched or squashed. When the material is allowed to spring back to its original shape, the stored energy is transferred as kinetic energy. Want to see energy transfers at work? Check this out: www.sciencemuseum.org.uk/videos/onthemove.aspx On the Move is an amazing video about an enormous and extraordinary machine built from materials including an armoured personnel carrier, a bow and arrow, and even a pink toy poodle. It demonstrates the many ways you can transfer energy. Why not try making a machine just like this for yourselves from things you can find around your house? Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 10 A B D C Grab this stuff: A 2 plastic bottles with long thin necks Paddle Power 1 B Electrical tape C Elastic band D Curvy lollypop stick 2 Tape your two plastic bottles together around the widest parts of the bottles. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour Put your elastic band around the top of the two bottles, close to where the lids are. 11 3 4 Put your lollypop stick through the middle of the elastic band and use a second band to secure it in place. Turn the lollypop stick round and round so the elastic band twists up. Then release it and check that the lollypop stick is able to turn freely. Top tip! 5 You’re now ready for your maiden voyage! When you put your paddle boat in the water you might find it floats too high for the paddle to work effectively. Try adding an equal amount of water to each bottle as ballast – keep adding more until there’s just enough to make your boat float low enough! What’s happening… When the paddle is fully wound up, and the elastic band is taut and ready to unravel, we say the paddle has lots of potential energy, energy that’s waiting to be released. When you let go of the paddle it starts to turn, and the potential energy changes into kinetic energy. If you allow this to happen in water the kinetic energy will be transferred to the whole boat and the boat will move. Live on Tour! Activity and information pack www.sciencemuseum.org.uk/liveontour 12 Hydrogen-powered urban car Fact file Key information This car, built by British company Riversimple LLP, is powered by a small stack of fuel cells which use hydrogen to produce electricity. The car also captures and stores energy when it brakes. Other cars have this kind of technology but the unique thing about this car is that it follows a ‘whole system’ design approach. It has been carefully crafted to make best use of the widest possible range of energy efficient elements. Instead of trying to squeeze the parts into a car architecture designed for a petrol engine, Riversimple have rethought the whole design. By removing all the unnecessary parts they have made the car as light and therefore energy-efficient as possible. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour Year built: 2010 Maximum speed: 80 km/h (50 mph) Mass: 350 kg Fuel type: Hydrogen Gas Best fact: With pilot schemes starting in 2013/14, people will not be able to buy a Riversimple car; they will only be able to rent it by taking out a contract in the same way mobile phone packages are sold to customers. Historical importance rating: ?/5 (too early to tell) 13 Glorious gravity Gravity is a natural force that makes objects attract one another. In everyday life, gravity is most familiar as the force that gives weight to objects and causes them to fall to the ground when dropped. Gravity is also responsible for keeping the planets orbiting around the Sun, the Moon orbiting around the Earth, and our tides. The fight for gravity Weight v. mass Sir Isaac Newton is known to some as the father of gravity, but others disagree. Newton worked at the Royal Society alongside another talented scientist called Robert Hooke, and the two regularly wrote to each other discussing the latest scientific theories. In one of these letters Hooke brought up the subject of gravity and very briefly outlined an idea he had about it. Hooke’s idea inspired Newton to go off and work on the problem himself. Newton expanded Hooke’s idea and created the ‘theory of universal gravitation’. When Newton published this theory, Hooke claimed Newton had stolen his idea, and that he should be recognised as the true discoverer of gravity. The debate raged, but was never really settled. The only thing we can say with any confidence is that gravity was definitely discovered by one of them. Which one do you think it was? Did you know mass and weight are actually different things? The mass of an object is just how much matter it contains, which is the same wherever the object is. The weight of an object is the force its mass is exerting because of gravity, so objects will have different weights in different places, such as on planets where gravity is weaker or stronger than on Earth. Issac Newton Sir Isaac Newton Did you know...? No picture of Robert Hooke exists. The only known portrait is missing presumed destroyed, and the main suspect just happens to be Isaac Newton! V Robert Hooke Full name Robert Hooke 4 January 1643 Date of birth 18 July 1635 Woolsthorpe-by-Colsterworth, Lincolnshire Place of birth Freshwater, Isle of Wight Mathematician, astronomer, natural philosopher, alchemist and theologian Job description Natural philosopher, architect and polymath Describing universal gravitation and his three laws of motion Claim to fame Known for his law of elasticity, Hooke’s law and for first applying the word ‘cell’ to describe the basic unit of life The cat flap Best invention The balance spring, a device which allowed the first ever portable clocks and watches Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 14 A C B Grab this stuff: A three different-sized balls B one large separator C one small separator Ball Blaster 1 See energy transfer in action by blasting a ball up into the air Stack the three balls on top of each other using the separators to keep them apart. Top tip! Make sure the balls are completely aligned in a straight line one above the other before dropping them. What’s happening… This experiment is a great way to demonstrate the transfer of energy. Energy cannot be created or destroyed, only transferred from one form to another. When you bounce the small ball on its own, it doesn’t bounce very high. When you drop all three balls together, the lower balls transfer a large amount of energy to the smallest top ball and it bounces much higher. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 2 Hold the balls in front of you with your arms stretched out and drop the balls and see what happens. 15 V2 rocket or Vergeltungswaffe 2 Fact file Key information The V2 was an unmanned guided ballistic missile built by Germany during the Second World War. In its time it was the largest rocket that had ever been built and was feared because of its huge range and silent approach, meaning it could strike anywhere with devastating effect. Year built: 1943 Maximum speed: 5760 km/h (3580 mph) Mass: 12,500 kg Fuel type: Water and liquid oxygen Best fact: Early prototypes of the V2 rocket were painted in a black-and-white pattern. This colour scheme was designed to aid in tracking the rocket after launch. Historical importance rating: 4/5 Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 16 Fantastic forces Forces can make things speed up, slow down, change direction and even change shape. Without them our universe would fall apart! We’ve already explored gravity, so let’s have a look at a few other forces and what they do. Friction Upthrust You get friction when you try to move two surfaces over each other. It acts in the opposite direction to the movement and makes it harder for things to move. Try rubbing your hands together as fast as you can and see what happens. Then, as you’re rubbing, try pushing your hands harder together. Now smell your hands. Friction makes your hands heat up, your palms grip each other and your flesh burn! Rough surfaces produce more friction then smooth surfaces. Question: How does a massive oil tanker that weighs thousands of tonnes still manage to float?! Answer: Upthrust! This force pushes any object in a liquid or gas upwards, as long as the object is lighter than the amount of liquid or gas it’s pushing out of the way. So that huge, massive oil tanker weighing thousands of tonnes is still lighter than the huge, massive amount of water that would take its place if it weren’t there! Friction can be useful; it acts between our shoes and the floor to stop us slipping and it acts between the tyres of a car and the road to stop the car skidding. Friction can also be a nuisance. As we’ve experienced with our hands, it converts kinetic energy into heat energy, which is usually wasted. We can reduce friction by oiling or lubricating the surfaces. This means that the surfaces no longer rub directly on each other but slide past on a layer of oil. This makes it much easier to move them and less kinetic energy is converted to heat energy. Air resistance If you’ve ever fallen out of a plane and forgotten to wear a parachute, you’ve probably thought a bit about air resistance as you’ve plummeted towards the ground. You probably thought, ‘I wish I remembered that parachute!’ It’s best to think about air resistance by imagining air molecules as little balls. When an object is moving these little air molecules will be hitting the object. The bigger and flatter the object, the more of those molecules will hit it, causing more resistance and slowing it down. A parachute’s big open canopy will catch lots of these air molecules, causing lots of resistance as you fall through the air. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 17 E B A C D Grab this stuff: Handy Hovercraft A Old unwanted CD Create your own friction-defying hovercraft D Balloon 1 Grab your CD. Put your finger on top of the hole in the centre and slowly run your finger out towards the edge of the CD. Repeat the process on the other side. On one side of the CD you should feel a small ridge near the centre hole. This would cause friction on your finished hovercraft, so place your CD down with this ridge pointing upwards. Live on Tour! Activity and information pack www.sciencemuseum.org.uk/liveontour B Sports bottle cap C Lump of modelling clay E Collar template 2 Roll your lump of modelling clay into a sausage shape and push it around the bottom edge of your bottle cap. 18 3 Push the bottle cap down onto your CD over the top of the centre hole. 4 When you’ve done, make sure the sports cap is closed. Use any leftover modelling clay to add around the edge of your bottle cap. Make sure it’s stuck to the CD as firmly as possible and that the seal is airtight, but also check that you can still blow air through your sports cap when it’s open. 5 Make up your collar template and attach it around the sports cap and the neck of the balloon. Blow up your balloon and put the opening of it onto the sports cap. 6 Put your hovercraft on a flat, smooth surface such as a table or laminate floor, open the sports cap and watch as your hovercraft glides gently across the surface. If you open the sports cap, air from the balloon should come rushing out and stop when you close the cap again. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 19 Top tip! What’s happening… When you open the sports cap, air from the balloon rushes underneath the CD, causing the CD to lift slightly so it’s no longer touching the surface – the CD is effectively floating on a cushion of air. If you give the CD a push it will glide on this cushion of air. No part of the CD is touching the surface, so there’s very little friction, allowing the CD to glide further and faster than it would normally. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour Twist the neck of the balloon before attaching it to the sports cap. This stops too much air escaping as you attach the balloon. 20 Hovercraft collar template 1 Grab this stuff... 2 Fold it in half along the centre line. 4 Cut out the squares A and B and write your name or the name of the hovercraft in the appropriate box. Cut around the outside of the template. 3 Tape the top of the template together, along the boxes marked C. 5 Curl the template around so that your name is on the outside and the two boxes marked D meet up. Put a small piece of tape along the boxes marked D, so that the template can easily be pulled apart and reattached when necessary. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 21 SR-N1 (Saunders Roe Nautical 1) hovercraft Fact file Key information Year built: 1958 The SR-N1 was built by Saunders Roe Ltd on the Isle of Wight, based on ideas by the British engineer Christopher Cockerell. It was the first craft of its kind. The SR-N1, like all hovercraft, is supported by a cushion of highpressure air, forced down towards the ground and contained within a ‘skirt’. Because they are supported by a cushion of air, hovercraft are the only vehicles that can travel equally well over land, ice and water. In its early days there were arguments over weather the hovercraft should be considered a boat or an aircraft. Maximum speed: 93 km/h (58 mph) Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour Mass: 7000 kg Fuel type: Petrol Best fact: The SR-N1 has a large dent in the front, caused by the Duke of Edinburgh (the Queen’s husband) driving it at excessive speeds shortly after its maiden voyage. This damage has never been repaired and is affectionately known as the ‘royal dent’. Historical importance rating: 2/5 22 Grab this stuff: 2 A4 paperback books 1 Place your two books on a flat surface with the opening sides of the books facing each other and the spines away from each other. 2 Super-Strong Friction See just how strong friction can be! Top tip! Overlap at least two-thirds of each page to get the best results. 3 Carefully interleave the pages, and ensure almost every page from one book is overlapped with a page from the other. Be amazed that the books are held together just by the super strength of friction! What’s happening… If you look at a sheet of paper under a microscope you’ll see it’s actually very rough. When two sheets rub together these rough parts catch against each other, causing lots of friction. Although two pages only create a small amount of friction to hold the pages together, when two whole books of pages rub against each other, the amount of friction becomes huge. This is what stops you pulling them apart! Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour Now have a tug of war: one person grabs the spine of one book, another person grabs the spine of the other – and pull! 23 Marvellous materials Materials – things that your gran uses to make you a jumper. But wait! Everything in the whole universe that’s either a solid, liquid or gas is also actually a material, which makes it a much more exciting subject than you might expect... Atoms Cornflour slime When you’re looking at materials you have to start small. So small, you can’t even see the things we want to look at. Atoms make up every material in the universe, and atoms themselves are made of even smaller bits and pieces. Atoms can act in different ways to make the materials they make up act in different ways... Not all materials fit neatly into being either a solid, liquid or gas. You can make a material at home that sometimes acts like a solid and sometimes like a liquid. Get some cornflour from the supermarket, and put about 100 grams in a bowl. Then very slowly add water and mix it around, until you feel it start to push against your fingers. Be warned – this gets pretty messy! Solids, liquids, gases Liquid nitrogen Take water, for example. If you have a cup of liquid water and you stick it in the freezer, you’re removing some of the heat energy from the atoms in the water. This means the atoms don’t move as much, and the water becomes solid (ice!). Put the same cup of water in a kettle, and you’re adding heat energy – this makes the atoms move much more, until they break free from each other and the water boils and becomes a gas. What’s the coldest thing in the world you can think of? Where’s the coldest place you’ve ever been? Neither of these will come close to the shockingly low temperature of liquid nitrogen: at –196 °C, swimming in this liquid would cause death by frostbite in less than a minute! Almost anything that comes into contact with it will freeze in seconds, changing its properties with lightning speed. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 24 A E C B D G F Grab this stuff: A Large clear container B 2 small bottles Separating Water C 2 glass tumblers See how the temperature of water affects how it behaves. F Electrical tape 1 D Blue and red food colouring E Hot, lukewarm and cold water G Modelling clay 2 Fill the large plastic container with water before the audience enter. Try and fill it with equal parts of warm and cold water so it’s just lukewarm. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour Attach the small bottles to the top of the tumblers using electrical tape. 25 3 Put a couple of drops of red food colouring into one of the small bottles and fill it with hot water. Then, seal it with modelling clay and gently squeeze the bottle to make sure no air can escape. 4 Again, put a couple of drops of blue food colouring into the other small bottle, fill it with cold water and seal it with modelling clay. 5 Lower both glasses into the large plastic container and once they’re in position remove the modelling clay. Top tip! Watch as the hot water and the cold water behave in very different ways. The hotter your hot water and the colder your cold water the better this experiment will work. What’s happening… The molecules of water are all behaving differently. The molecules of hot water have lots of heat energy and so are moving around lots and taking up lots of space. This makes the hot water less dense (lighter) than the lukewarm water and so it floats to the top. The cold water is the exact opposite: it has less heat energy so its molecules are taking up less space than the lukewarm water, making it more dense so it sinks. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 26 Teachers’ notes Page 4 Page 6 A brief history of the Science Museum The Science Museum’s Past, Present and Future This timeline is a very brief outline of how the Science Museum was formed and how it acquired some of its most famous objects. More information can be found here: www.sciencemuseum.org.uk/about_us Following this structure your students could create a timeline of their own. What goes on display in the Museum is the choice of our hugely experienced team of curators and exhibition developers. Give your students the chance to curate their own set of objects by filling in their own set of fact file cards. Educational objective Educational objective To create a timeline of important events in the history of a famous place, person or team, based on a variety of different sources. To use prior knowledge and observational skills to choose objects, give them a score based on their properties, and gather key information and interesting facts about them. What to do… What to do… Get your students to choose their favourite place, person or team, and ask them to create a timeline with at least five different entries on it. Each entry should include a date, a fact and where that fact came from. In the very back of this pack you’ll find a blank version of the fact file cards used throughout the pack. Show the students the fact files in the pack, then give them five photocopied or printed versions of the blank cards. Ask them to choose objects that they find interesting and fill in a fact file card for each one. When they’ve finished you should have lots of different fact files on lots of different objects. Lay them all out, take a vote to find out what the class’s ten favourite objects are, and use these fact files in a wall display. Key student learning • Everything has a history. • Different periods of time have recognisable characteristics and these characteristics shape events that happen during that period. • There are many different sources of information on historical events. • Sources sometimes contradict each other. Curriculum links • Placing events, people and changes into correct periods of time. • Using dates and vocabulary relating to the passing of time, including ancient, modern, BC, AD, century and decade. • How to find out about the events, people and changes studied from an appropriate range of sources of information. Key student learning • Some objects have a more important role in the way we live our lives, or have had a bigger historical impact, than other objects – but this isn’t always a factor in their appeal. • Curators and exhibition developers have hundreds of objects to choose from – not all objects can be shown at the same time and different things can affect which objects are chosen. Extensions • Get the students to create fact files for objects that have not been invented yet. What objects will a museum of the future hold? • Recall, select and organise historical information. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 27 Page 9 Page 11 Enigmatic energy Paddle Power Energy transfer machines have been around for a long time. You can see examples that may or may not work in the cartoons of William Heath-Robinson or Rube Goldberg, or in hugely intricate and expensively produced TV adverts from international car-makers. Why not let On the Move inspire you to make your own energy transfer machine? Educational objective Educational objective To use knowledge of energy transfer and the properties of materials to create an inefficient machine to do a simple task. What to do… Split your class into small groups, giving each group a simple task to achieve, in the most convoluted manner possible, with the aid of an inefficient machine. Ideas for tasks could be: feed the cat, pour a glass of water or a bowl of cereal, or empty the bin. When each machine is ready, film it (if you can from several angles) and cut the footage together using a simple movie editing package. Perhaps think of holding a film day so other classes can see the amazing machines created. To explore energy transfer, showing elastic potential energy being changed into kinetic energy. Key student learning • Potential energy (stored in the ‘primed’ elastic band) can be transformed into kinetic energy, seen in the movement of the boat. Practicalities • If you’re choosing to launch your paddle boat on a large pond or lake, tie some cotton or string to your boat so you can keep hold of it. Otherwise, when the twists in the elastic band eventually run out, your boat will be left stranded in the middle of the water. • Although adding ballast to the bottles will allow your boat to sit at a better height in the water, too much will make your boat sink. • If your band is unwinding too quickly, try crafting a plastic tab that will hit your paddle every time it goes round, thereby slowing it down. Key student learning Discussion • Potential energy can be transformed into other types of energy, in lots of different ways. • Why is the boat floating? Practicalities • Give the class lots of different materials, and also encourage them to use their imagination and use things from around the room they are in. • Which direction are you applying a force? Which direction is the boat travelling? • If you add more turns to the elastic band will it go faster or further? Extensions • Machines can be big or small, but pupils should be made aware of any limitations. • Allow students to experiment with creating their own paddles. • Some of the best ideas can take time to work out and be rather frustrating – consider running the workshop over two or three sessions, the first few to practise before building the final machine in the final session. • What happens if you add a rudder and change its angle? • The setting up and filming can take a long time – remember to plan for this in your sessions. The Science Museum courses and resources team have also produced an amazing resource called Launchbox, based on the On the Move video. Launchboxes allow students to investigate the six areas of science covered in our Launchpad gallery: • Light •S ound • Electricity and magnetism •E nergy transfer • Forces and motion •M aterials • Try adding extra bottles or paddles. Curriculum links Sc4 Physical processes Forces and motion • Friction, including air resistance, is a force that slows moving objects and may prevent objects from starting to move. • When objects (for example, a spring or a table) are pushed or pulled, an opposing pull or push can be felt. Students will use investigative hands-on activities that lead them to create their own ‘inefficient machine’. For more information visit: www.sciencemuseum.org.uk/educators/launchboxes.aspx Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 28 Page 15 Page 18 Ball Blaster Handy Hovercraft Educational objective Educational objective To explore the transfer of energy between objects. To explore friction by creating a vehicle that reduces this force, allowing the vehicle to move. Key student learning • Energy cannot be created or destroyed but can be transferred and stored. Practicalities • It is quite easy to lose the separators so have some spare ones. • The small ball can bounce very high and fast so the students need to be careful not to hurt themselves or break anything in the classroom. Key student learning • By floating on a cushion of air, a hovercraft reduces the amount of friction between the vehicle and the ground, allowing it to move quickly and smoothly. Practicalities • The more modelling clay you use to stick down your bottle cap, the better it will stick. But this will also make your hovercraft heavier and stop it working as effectively. Discussion • Make sure your modelling clay doesn’t block the hole in your bottle cap. • Would it work the other way around with the smallest ball on the bottom? • Blowing the balloon up can be a problem for some children, so have a balloon pump on hand. • Why does the small ball bounce so high? • Attaching the balloon to the bottle cap can be frustrating. Put the body of the hovercraft on a flat surface. When you’ve inflated the balloon, twist the neck so that air can’t escape, hold the body of the balloon between your elbows and stretch the opening of the balloon with the thumb and forefingers of both hands. • Get the students to think about the transfer of energy from gravitational potential energy to kinetic energy to elastic potential energy to kinetic energy again. Extensions • Use different size balls. • Drop from a higher height. Curriculum links KS2 Sc1 Scientific enquiry • The collar is an important part of the hovercraft – without it the balloon can flop over from its neck and run against the ground, creating friction and stopping the hovercraft from working effectively. Discussion • Why can hovercraft travel on water as well as on land? Investigative skills • Do you think hovercraft should be described as boats or aeroplanes? Ask questions that can be investigated scientifically and decide how to find answers. Curriculum links Sc4 Physical processes Forces and motion When objects (for example, a spring, a table) are pushed or pulled, an opposing pull or push can be felt. KS2 Sc4 Physical processes Forces and motion Friction, including air resistance, is a force that slows moving objects and may prevent objects from starting to move. KS3 3.1 Energy, electricity and forces a) E nergy can be transferred usefully, stored, or dissipated, but cannot be created or destroyed. b) Forces are interactions between objects and can affect their shape and motion. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 29 Page 23 Page 25 Super-Strong Friction Separating Water Educational objective Educational objective To explore friction and its strength by trying to pull interleaved books apart. Explore how the temperature of water affects its density with two different bodies of water at different temperatures. Key student learning Key student learning • Friction is a strong force. • Density is about volume not weight. • The greater the surface areas in contact the harder it is to get the surfaces to slide against one another. • Hot water is less dense than cold water. Practicalities • Heat rising applies not only to bodies of air but all materials. • Paperback books work best. • The more pages the books have, the more effective the result will be. • Objects with a lower density will float. Practicalities • It can be difficult to grasp the books to pull, so the bigger your books the better. • Put the large tank where you want it to be from the start and then fill it with water using a smaller container such as a bucket. Once the container is full it will be heavy and difficult to move. • Hands can slip off the books whilst pulling, so ensure pupils are warned to be careful not to fall backwards if this happens. • For younger children it’s better to have the large tank already filled and ready for groups to use, as this avoids spillages and queues at the sink. Discussion • The amount of food colouring you’ll need will depend on the size of your bottles, but the more you use the better. • Why does this work? • Would it still work if I used smaller books? Curriculum links KS2 Sc4 Physical processes Forces and motion Friction, including air resistance, is a force that slows moving objects and may prevent objects from starting to move. Discussion • Why does the red water rise and the blue water sink? • Whet will happen if we leave the tank for an hour after the experiment has taken place? Curriculum links KS2 Sc3 Materials and their properties Changing materials d. Describe changes that occur when materials (for example, water, clay, dough) are heated or cooled. Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 30 Fact file Key information Year built: Maximum speed: Mass: Fuel type: Best fact: Historical importance rating: Live on Tour Activity and information pack www.sciencemuseum.org.uk/liveontour 31
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