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8L Name

End of Unit Test Standard (S) Class

Date

1 a What shape is the Earth? [1 mark] b How long does it take for the Earth to go around the Sun once? [1 mark] 2 In the UK, there are over 16 hours of daylight in the middle of the summer. a How is the number of hours of daylight different in the winter?

[1 mark] b Why do we have day and night?

[1 mark] c Why is the length of daylight different at different times of the year?

[1 mark] 3 The Earth has one moon. It is just called the Moon. a What is a moon? [2 marks] b How do we see the Moon? [1 mark] c Why do we see different “phases” of the on Earth?

[3 marks] 4 Write these things in order of size, starting with the smallest: Universe, Earth, galaxy, Moon, Solar System, Sun.

[1 mark]

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8L

End of Unit Test Standard (S)

5 Many other stars are much bigger and brighter than our Sun. Why does our Sun look brighter than other stars?

[1 mark] 6 Diagrams A and B below show two different models of our Solar system. One represents what people used to think and the other represents what we know today.

A

B

a Which one, A or B, best represents our Solar system as we understand it today?

[1 mark] b Explain your answer to a), using information from the diagrams in your answer.

[2 marks] c People also used to believe the earth was flat. Why did people change their minds?

[1 marks] 7 Will these pairs of magnets drawn below attract or repel each other? Write ‘attract’ or ‘repel’ underneath each pair.

.

.

[1 mark]

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Page 4 of 4


8L

End of Unit Test Standard (S)

8 The drawing shows a compass. a In which direction is the compass needle pointing? Choose from: north, south, east or west.

[1 mark] b Explain your answer to part a.

[1 mark] c The compass is then placed next to a magnet as shown. Explain why the compass needle is now pointing in a different direction.

[1 mark] 9 The diagram shows two people standing on the surface of the Earth. a What is the name of the force that pulls people towards the Earth?

[1 mark] b Draw an arrow from person B to show the direction of the force that keeps him on the Earth. [1 mark] c Explain your answer to part b.

[1 mark]

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8L

End of Unit Test Standard (S)

10 The diagram shows a spacecraft orbiting above a moon.

a On the diagram, draw an arrow to show the force of the moon on the spacecraft. Label the arrow M. Draw another arrow to show the force of the spacecraft on the moon. Label the arrow S. Draw your arrows so that the length of each arrow represents the size of the force. [2 marks] b How would the size of forces M and S change if the spacecraft had a greater mass?

[1 mark] c How would the size of forces M and S change if the spacecraft was further away from the moon?

[1 mark] 11 The table shows the strength of gravity of three moons in the Solar System. a Which moon would you expect to have the biggest mass?

[1 mark]

Moon

Gravity at the surface of the Moon (N/kg)

Io

1.80

Europa

1.32

Moon

1.63

b Explain your answer to part a.

[1 mark]

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