8. Gravity and Its Effects

What is the force that keeps us from floating off into space?

• Magnetism

• Gravity

• Friction

• Electricity

Who discovered gravity?

• Albert Einstein

• Isaac Newton

• Galileo Galilei

• Nikola Tesla

What causes tides in the sea and oceans?

• Wind

• Sunlight

• Gravity

• Rainfall

Why does a stone fall on the ground faster than a piece of paper?

• The stone is heavier

• The stone is smoother

• The stone is smaller

• The stone is denser

How much is the Moon's gravitational pull compared to Earth's?

• 1/2

• 1/4

• 1/6

• 1/8