1. Why does a ball thrown into the air tend to fall back to the ground?

A. Gravity causes the ball to fall.

B. The air pulls the ball to the ground.

C. Acceleration causes the ball to move faster.

D. The mass of the ball causes the ball to drop.

2. What is the direction towards which objects on Earth are pulled by the Earth?

A. back

B. center

C. Front

D. Side

3. Imagine the Earth lost its gravity. What will happen to objects on it?

A. All objects will float in the air.

B. All objects will fall on the ground.

C. Everything will just stay in place.

D. Only the lighter objects will float in the air.

4. How will planets move if there is no gravity in the universe?

A. Nothing will happen.

B. Planets will stay in orbit.

C. Planets will not be attracted to each other.

D. All planets will move to the eastern direction.

5. Who discovered gravity when he saw an apple falling to the ground?

A. Albert Einstein

B. Galileo Galilei

C. Isaac Newton

D. Nicholas Copernicus

1.Gravitational Force makes a ball thrown up into the air fall back to the ground. When we throw a ball up into the air, there is a force exerted by earth towards the ball which attracts it back to the ground which makes it fall. This force is called gravitational force. The gravity of the earth pulls the ball downwards.A

2. B

3.d

4.c

5.c

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