Question

1. What force does the earth use to attract object to its center?
A. Centrifugal
B. Frictional
C. Gravitational
D. Nuclear
2. Gravity or gravitational force is the force of____
A. Repulsion
B. Acceleration
C. Attraction
D. Rejection
3.The place beyond air is called____
A. Star
B. Earth
C. Sun
D. Space
4. Gravitational force Is an example of____
A. Non contact force
B. Contact force
C. Heavenly force
D. Normal force
5. If the moon is not pulled by earth’s gravity it, will____in the space.
A. Remain at the same place
B. Keep on revolving
C. Fly away
D. Keep on rotating
6. Astronauts bounce in the spacecraft because of ______
A. Weightlessness
B. Jumping suit
C. Air
D. Gravity
7. Loss of bone mass and muscle weakness are caused by
A. Force
B. Gravity
C. Weightlessness
D. Pushing
8. Gravitational force is called the Universal glue because
A. It pushes everything apart
B. It holds everything together and prevents them from floating
C. It depends on weight of the object
D. It makes object to have no weight.
9. In vacuum a feather and a book will hit the floor at the ______
A. Same time
B. Different time
C. One after other
D. Both will float
10. The weight of an object is a measure of the _________
A. Friction force
B. Gravitational pull
C. Electrical force
D. Earth force

THEORY
1. Define the following terms
a. Weightlessness
b. Gravitation
2. A man has a mass of 200kg. What is its weight on the surface of the earth?
3. An object has a mass of 60kg. What is its weight on the surface of the moon?
4. State one effect of gravitation

Answer 1

Answer:

1- gravitational

2- attraction

3-space

4-heavenly force

5- fly away

6-gravity

7 - weightlessness

8-it holds everything together and prevents them floating

9-same time

10 - gravitational pull