AQA Revision Booklet
Gravity, mass and weight
Answer the following questions in your book (apart from questions 1, 4 and 6 which you can answer by writing on this sheet).
1. Complete the following sentences using all or some of the words below;
Mass, weight, kilograms, Newtons, Newmans, Mr Porter, Mr Rayner, Force, upthrust
____________ measures how much material an object is made of. It is measured in ____________________. Weight measures the ________________ of gravity on an object. Because weight is a _______________ it is measured in _______________. Mr ___________ is the best science teacher in the world.
2. Can you explain why your weight would be less on the moon (compared to the earth)?
3. Can you explain why your mass would be the same on earth and the moon?
4. On the picture of the earth below, can you draw what would happen to the ball if each man threw the ball up into the air?
5. To calculate the weight of something, you need to multiply its mass by the gravitational field strength wherever you are;
Weight (N) = mass (kg) x Gravitational field strength (N/kg)
The gravitational field strength on earth is around 10 N/kg. Use this information to complete the following (fill in the gaps)
Dog’s mass = 7 kg Weight of dog on earth =
Mass of scissors = Weight of scissors on earth = 3 N
Mass of man = Weight on earth = 750
6. Complete the following table (use your own mass although you may lie if you wish!).
Planet
Your mass (kg)
Gravitational field strength (N/kg)
Your weight on the planet (N)
Mercury
3.7
Venus
8.9
Earth
9.8
Mars
3.7
Jupiter
23.1
Saturn
9.0
Uranus
8.7
Neptune
11.0
Pluto
0.7
7. Gravitational field strength is different on different planets. Why?
8. On which planet will you be heaviest (greatest weight)?
9. On which planet will you be lightest?
10. Imagine that a hole could be drilled right through the
Answer the following questions in your book (apart from questions 1, 4 and 6 which you can answer by writing on this sheet).
1. Complete the following sentences using all or some of the words below;
Mass, weight, kilograms, Newtons, Newmans, Mr Porter, Mr Rayner, Force, upthrust
____________ measures how much material an object is made of. It is measured in ____________________. Weight measures the ________________ of gravity on an object. Because weight is a _______________ it is measured in _______________. Mr ___________ is the best science teacher in the world.
2. Can you explain why your weight would be less on the moon (compared to the earth)?
3. Can you explain why your mass would be the same on earth and the moon?
4. On the picture of the earth below, can you draw what would happen to the ball if each man threw the ball up into the air?
5. To calculate the weight of something, you need to multiply its mass by the gravitational field strength wherever you are;
Weight (N) = mass (kg) x Gravitational field strength (N/kg)
The gravitational field strength on earth is around 10 N/kg. Use this information to complete the following (fill in the gaps)
Dog’s mass = 7 kg Weight of dog on earth =
Mass of scissors = Weight of scissors on earth = 3 N
Mass of man = Weight on earth = 750
6. Complete the following table (use your own mass although you may lie if you wish!).
Planet
Your mass (kg)
Gravitational field strength (N/kg)
Your weight on the planet (N)
Mercury
3.7
Venus
8.9
Earth
9.8
Mars
3.7
Jupiter
23.1
Saturn
9.0
Uranus
8.7
Neptune
11.0
Pluto
0.7
7. Gravitational field strength is different on different planets. Why?
8. On which planet will you be heaviest (greatest weight)?
9. On which planet will you be lightest?
10. Imagine that a hole could be drilled right through the