Question

1. How long has gravity been around?

A. When the solar system started.

B. Since the very start of the Universe.

C. When the moon was formed.

D. When the Earth was just rocks.

2. What keeps the atmosphere around planet Earth?

A. The weight of clouds.

B. Gravity of the moon.

C. Gravity of Earth.

D. The force the Sun pushes towards Earth.

4 years ago