Gravity Quiz

What force pulls everything toward the ground?

• Gravity

• Friction

• Magnetism

• Electricity

Who was the first person to seriously study gravity?

• Isaac Newton

• Galileo Galilei

• Nikola Tesla

• Albert Einstein

What happens to an object when it is thrown up in the air?

• It moves sideways

• It eventually falls down

• It floats in the air

• It keeps going up

Why do objects fall at different speeds on Earth?

• Because of their temperature

• Because of their color

• Because of their shape

• Because of air resistance

What did Isaac Newton realize about gravity?

• It only affects heavy objects

• It pushes objects away from the Earth

• It pulls objects sideways

• It pulls objects toward the Earth

What is the force of attraction between any two objects made of matter called?

• Gravity

• Electricity

• Friction

• Magnetism

What experiment did astronaut Dave Scott perform on the Moon?

• Throwing a ball

• Dropping a hammer and a feather

• Jumping up and down

• Dropping a book and a piece of paper

What is air resistance?

• The weight of an object

• The push of air against falling objects

• The force of gravity

• The pull of the Earth

What happens to the gravitational pull as an object moves farther from the Earth?

• It gets stronger

• It stays the same

• It disappears

• It gets weaker

What must astronauts achieve to escape Earth's gravity?

• Escape velocity

• Maximum speed

• Zero gravity

• Terminal velocity