Science Revision worksheet- 4
1. Choose the correct answer from the 2 given options.
1.
Heat travels from hot things to ……………. (hotter/colder) things.
2.
A thermal insulator does not let ………….(heat/cold) pass through.
3.
Muscles work by ……………….(pushing/pulling)
4.
When I exercise, my heart beats ………………..(faster/slower) and my pulse rate
…………….(increases/decreases).
5.
Exercise ……………….(strengthens/weakens) our muscles.
6.
Our bodies use …………..(calcium/iron) to keep our bones and teeth strong.
2. Label the skeletal system using the words in the box below.
Rib cage Backbone Hip bone Skull
(b) What is the function of the rib cage?
_________________________________________________________________________
(c) What happens when the skeletal system and the muscular system work together?
________________________________________________________________________
(d) The skeleton provides support for the body, _______ and helps it to move.
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(e) Describe the uses of a skeleton.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
(f) Explain how an animal is able to move.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
_______________________________________________________________________
3. Look at the animals below. Have they got bones? Write ‘yes’ or ‘ No’.
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4. Who do you think these skeletons belong to :
5. Fill in the blanks with the words from the list below.
6.Describe TWO different ways that the skeleton is important to the human body.
(i) .............................................................................................................................................
..................................................................................................................................................
(ii) ..........................................................................................................................................
..................................................................................................................................................
7. The boxes below show the length of one person's hand at different stages of the life
cycle.
Draw lines to match each length of hand to the correct stage of the life cycle.
8.Jamil used a thermometer to measure the temperature of water in a trough shown below.
What is the temperature of the water in the trough?
A.
23°C B. 24°C C. 36°C D. 37°C
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9.Chris poured the same amounts of cold water into two similar metal containers, A and B.
Each container was wrapped around with a sheet of different material as shown below.
He inserted a thermometer into each container and
recorded the change in temperature over 30 minutes
when the containers were left in a room at room
temperature.
Based on the graph below, which of the following are the materials wrapped round each
container?
Material wrapped around container
A.
A
B
(1)
Aluminium
Styrofoam
(2)
Plastic
Cloth
(3)
Cloth
Plastic
(4)
Styrofoam
Aluminium
1 B. 2 C. 3 D. 4
10.Ravi had 4 different sheets of the same
size and thickness. Each sheet was made
of a different material: A, B, C and D. He
wrapped the same number of ice cubes of
the same size with a different sheet. He
wanted to find out which material can
prevent the ice cubes from melting for the
longest time.
Ravi recorded his observations in the
table as shown.
Key
X: ice cubes did NOT melt
: ice cubes started to melt
material in which ice cubes were
wrapped in
time
A
B
C
D
after 1 min
X
X
X
X
after 2 min
X
X
X
after 5 min
X
X
after 10 min
X
after 15 min
X
after 20 min
X
Based on the information above, complete the following sentences using letter(s) A, B, C
and/or D ONLY.
To prevent the ice cubes from melting, the best material to wrap the ice cubes is
___________________ and the worst material to wrap the ice cubes is _______________
11. Fred wanted to observe how the temperature of water changed when he poured hot
water into Cup A and Cup B, which are made of different materials. He filled each cup
with 100ml of water at 50°C. He measured the temperature of the water in each cup at an
interval of 2 minutes and recorded in the result table below. He conducted the experiment
in a room with a constant temperature of 28°C.
Time(min)
(a)
Temperature (°C)
Cup A
Cup B
2
44
46
4
40
44
6
36
40
8
32
38
10
30
36
Plot a line graph according to the results shown in the table above.
(b) Predict which cup, (A or B), of hot water will reach room temperature first.
Give a reason for your answer.
____________________________________________________________________
____________________________________________________________________
12. Class 10 carried out an experiment to find out which material kept a cup of hot water
the hottest.
Each cup was surrounded with a different material and filled with boiling water and the
temperature was recorded. After half an hour the temperature was measured in degrees
Celsius (°C)
Cup A was surrounded with wool
Cup B was surrounded with cotton
Cup C was surrounded with paper.
Here is the table of results:
Cup surrounded with
material
Temperature at start
(°C)
Temperature after ½
hour (°C)
A = wool
90°C
80°C
B = cotton
90°C
70°C
C = paper
90°C
50°C
a) Which material is best at keeping the water hot?
____________
b) Why have you chosen this answer?
_______________________________________________________________________
_______________________________________________________________________
c) Suggest TWO ways to make this experiment a fair test:
________________________________________________________________________
_________________________________________________________________________
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d) What equipment would you use to measure the temperature of the water.
Newtonmetr
e
thermometer
metre stick
e) What units is temperature measured in?
_________________________________________________________________________
13. Rebecca and Josh are cooking rice at home.
(a)They measure some water in a jug.
How much water did they measure? ..................................................... cm3
(b) They put the water into a metal saucepan.
They put the saucepan on the cooker.
Why is metal a good material for
the saucepan? Tick ONE box.
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(c) After five minutes, the water starts to boil.
Josh puts the uncooked rice into the saucepan.
The metal saucepan is hot. The wooden handle of the saucepan is still cool.
Explain why the wood is cool but the metal is hot.
..................................................................................................................................................
..................................................................................................................................................
(d) Rebecca and Josh must be careful with the hot saucepan, so that they do not burn
themselves.
Describe ONE other thing that might burn the children while they are cooking the rice.
.................................................................................................................................................
14(a) Class 4 want to find the best cup to keep drinks hot.
Tick ONE box to show which property is most important when choosing the best cup to
keep a drink hot.
(b) The class use the cups shown below. The cups are all made from the same material.
Write A, C or D in each row of the table below to show which cup gave each set of results.
Cup B has been done for you.
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(c) Look at the pictures of the cups. Cup B cooled the quickest. Explain why cup B cooled
the quickest.
..................................................................................................................................................
..................................................................................................................................................
(d) The class measures the temperature of the drink in one of the cups for a longer time.
The graph below shows their results.
Look at the graph.
(i) After how many minutes did the drink stop cooling down? ............................ minutes
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(ii) Explain why the drink stopped cooling down.
.................................................................................................................................................
.................................................................................................................................................
15. Plot the data onto the graph that you have been given below.
Time
Temperature
(minutes)
(°C)
0
10
5
20
10
30
15
40
20
50
25
60
30
65
35
70
40
70
45
70
50
75
55
80
60
90
16. Class 4 wants to know how long they can keep a mug of hot chocolate warm. They
made a cup of hot chocolate and measured the temperature at 720 C.
1) Name three different insulators they could put around the mugs to keep the drink warm.
a) ……………………… b) ………………………… c) ……………………………..
Class 4 decided to use 1) tin foil 2) brown paper 3) bubble wrap.
2) Which insulator do you think would be the best? …………………………………..
3) Which insulator do you think would have the least effect and why?
………………………………………………………………………………………….
4) If they cover 3 mugs, one with brown paper, one with tin foil and one with bubble wrap
and poured out hot chocolate into the 3 mugs and measured the temperature every 5
minutes, do you think this would be a fair test to find the best insulator? Explain.
……………………………………………………………………………………………
……………………………………………………………………………………………
5) If the temperature of the 3 different drinks were different at the start, would it be a fair
test?…………………………………………………………………………………………..
17.
18.
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19.
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