‘PLANET NUMBERS’ ACTIVITY SHEET e tun Mer cu ry ROCK OR GAS? Captain Smek has decided that planet with a solid surface is best for the Boov. Can you help Tip work out what fraction of the planets are made of rock? • If a planet is made of rock, colour it brown. • If a planet is made of gas, colour it yellow. Ear th er p it Ju us Ur a n Ve nu s p Ne What fraction of the planets are made of rock? 1/2 Can you write this as a decimal? 0.5 Tip’s tricky tester… 50% Can you write this as a percentage? M N ars Sat ur n us Ur a n Ve The Boov like planets that are either very big or very small. They have decided their new home must have a radius of less than 10,000 km or more than 30,000 km. Can you help Tip to work out what fraction of the planets are the correct size for the Boov to live on? Mer cu ry nu s PLANET SIZES e tun ep Tip’s tricky tester… Can you write this as a percentage? 75% n 0.75 Sat ur Can you write this as a decimal? ars 3/4 M What fraction of the planets are the right size for the Boov to live on? Ear th Colour the remaining planets blue. er p it Ju If a planet’s radius is less than 10,000 km or more than 30,000 km, colour it red. 1 ‘PLANET NUMBERS’ ACTIVITY SHEET PLANET THERMOMETER Oh really feels the cold and is struggling to work out which planets will be warm enough for him. Can you write the planets next to their temperatures to help him? 460°C Venus 167°C Mercury Which is the hottest planet? Venus Which is the coldest planet? 7.2°C Earth Uranus How many planets have an average temperature below freezing (0° C)? -55°C Mars 5 How many degrees colder is it on Mercury than on Venus? 293°C -145°C Jupiter -178°C Saturn -214°C Uranus -224°C Neptune 2 ‘PLANET NUMBERS’ ACTIVITY SHEET ORDERING THE PLANETS Oh has got in a muddle with the order of the planets. Can you help him? Put a 1 in the box next to the planet that is nearest to the Sun (the shortest distance), a 2 alongside the next shortest distance and so on, until you get to 8 for the planet furthest away from the Sun. Which planet is furthest from the Sun? Mercury Neptune How much further is Venus from the Sun than Mercury? 50 million km Which planet is closest to the Sun? PLANET DISTANCE FROM THE SUN (IN MILLIONS OF KM) ORDER Earth 150 3 Uranus 2,880 7 Mercury 58 1 Saturn 1,429 6 Mars 228 4 Neptune 4,504 8 Venus 108 2 Jupiter 778 5 3 ‘PLANET NUMBERS’ ACTIVITY SHEET EXTENSION TASK AN EXTRA CHALLENGE FROM TIP! Tip knows the radius of each planet, but wants to work out the diameter. Can you help her by filling in the table below? What is the difference between Earth’s radius and Venus’ radius? 319 km Which is the largest planet? PLANET RADIUS DIAMETER? Mercury 2,440 km 4,880 km Venus 6,052 km 12,104 km Earth 6,371 km 12,742 km Mars 3,397 km 6,794 km Jupiter 71,492 km 142,984 km Saturn 60,268 km 120,536 km Uranus 25,559 km 51,118 km Neptune 24,766 km 49,532 km RA DI U S Which is the closest in size to Earth? Mercury Jupiter Venus Which is the smallest planet? DIAMETER 4
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