# 3.5 Motion on Earth and in Space 2Y/3Y

## Quiz by Harper-Collins Science

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6 questions
• Q1
Which statement about day and night is true?
Day occurs when the Earth is closer to the Sun; night is when the Earth is further from the Sun.
Day occurs in regions facing the Sun; night occurs in regions facing away from the Sun.
Daytime is caused by the tilt of the Sun towards the Earth.
Night occurs when the moon blocks the Sun.
30s
• Q2
Our Sun is about four billion years old and is estimated to last for at least a further four billion years. Why will our Sun eventually die?
It will no longer burn because it will run out of oxygen.
It will run out of hydrogen to burn.
It will collapse under the strength of its own gravity.
It will run out of hydrogen and other elements to release energy by nuclear fusion.
30s
• Q3
Look at the distance-time graph for a moving object. At what speed is the object travelling?
5 metres per second
25 metres per second
30 metres per second
125 metres per second
30s
• Q4
Where does the Sun get its energy from?
nuclear fusion
burning Hydrogen
burning Helium
nuclear fission
30s
• Q5
A lorry is pulling a trailer along a road with a force of 5700 N. The trailer and the lorry each have an air resistance of 1000 N. The total of other frictional forces is 3700 N. Which statement correctly describes the situation?
The forces are in equilibrium; the lorry and trailer would stop moving.
The pulling force from the lorry is greater than the total of all the air resistance and other frictional forces, so the lorry and trailer would keep going at the same speed.
The forces are in equilibrium; the lorry and trailer would continue at the same speed.
The pulling force from the lorry is greater than the total of all the other forces, so the lorry would accelerate.
30s
• Q6
Imagine a large asteroid heading close to Earth. Scientists have predicted it will start to orbit the Earth in a regular pattern. What information would scientists need to know in order to predict this event? Select one answer.
the speed of the asteroid
the position and speed of the asteroid
the position of the asteroid as it comes close to the Earth
the position and speed of the asteroid, plus the atmospheric conditions on Earth
30s

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