Chapter 6 Multiple choice test

Chapter 6 Gravity and space

SoW ref 9J Gravity and space

Name Class Teacher

There is only one correct answer to each question. Tick () the box next to the answer that you think is right.

1 What are the correct units for mass and weight?

Mass Weight

A kilograms kilograms

B kilograms newtons

C newtons newtons

D newtons kilograms

A B C D 2 What is gravity?

A a force that attracts us to the centre of the EarthB a force that attracts us to the surface of the EarthC friction between our feet and the groundD a property that only the Earth has

3 Why do the Sun and the Moon look the same size?A everything that is thousands of miles away looks the same sizeB they are both the same sizeC they both give out light, so that’s how we see themD the moon is much smaller, but also much nearer to us

4 Which answer best describes how rockets move upwards?A the burning fuel makes them move, like in a carB the gases that shoot out push the rocket upwardsC they ride in the shock wave from an explosionD very hot air under them makes them rise quickly

5 The first man to set foot on the Moon was the US astronaut Neil Armstrong. In what year did this happen?

A 1869 B 1909 C 1969 D 1999

Hodder Science Assessment Pack © 2003 Hodder & Stoughton Educational

Chapter 6 Multiple choice test

6 People’s ideas about the universe have changed throughout history. Which of these ideas is now thought to be wrong?A most of the solar system was formed at the same timeB our galaxy is one of manyC planets wander through the starsD the sun is at the centre of the Solar System

Questions 7–9 refer to satellites, like the one in the drawing below.

7 When in space, satellites can be made to orbit around the Earth. Which answer about orbiting is true?A orbiting depends on getting high enough above the groundB orbiting depends on speed round the EarthC outside the atmosphere there is no gravity so orbiting is easyD satellites in orbit fly like aeroplanes

8 Satellites cannot remain in orbit if they are in the Earth’s atmosphere. Which answer explains why?A satellites can only work in the vacuum of spaceB the air resistance slows them downC there is daylight in the atmosphereD there is gravity in the atmosphere

9 Which of these is not a use of man-made satellites?A finding out about land useB navigation for shipsC reducing pollutionD sending TV programmes

Hodder Science Assessment Pack © 2003 Hodder & Stoughton Educational

Chapter 6 Multiple choice test

10 Which answer is correct?

Gravity in orbit around the Earth Gravity on the Moon

A none nearly the same as on the Earth

B nearly the same as on Earth much less than on Earth

C much less than on Earth none

D nearly the same as on the Earth nearly the same as on the Earth

A B C D

11 In the rescue of the Apollo 13 astronauts, NASA made use of the Moon’s gravity. What was it used for?A to slow down Apollo 13B to turn Apollo 13 back towards EarthC to shield Apollo 13 from the Sun’s raysD to relay radio messages from Apollo 13

12 What is the approximate strength of the Earth’s gravity field?A 1 newton per kilogramB 10 newtons per kilogramC 100 newtons per kilogramD 1000 newtons per kilogram

Hodder Science Assessment Pack © 2003 Hodder & Stoughton Educational