Understanding Gravity

What common scientific principle is at work when an athlete throws a ball or a child plays with a paper airplane?

• Inertia

• Magnetism

• Gravity

• Friction

What is the effect of gravity on a ball thrown into the air?

• It pulls the ball back to the ground

• It makes the ball float

• It has no effect on the ball

• It pushes the ball upward

Who was the scientist that formulated the Law of Universal Gravitation?

• Albert Einstein

• Nikola Tesla

• Galileo Galilei

• Isaac Newton

According to the Law of Universal Gravitation, what determines the strength of the gravitational pull between two objects?

• Their volume

• Their mass

• Their distance

• Their speed

Why do we not notice the gravitational pull between small objects like a couch and a lamp?

• Because they are not in a vacuum

• Because they are moving too fast

• Because their gravitational pull is too weak

• Because they are too far apart

What happens to the gravitational pull between an astronaut and the Earth as the astronaut travels further into space?

• It fluctuates

• It decreases

• It remains the same

• It increases

What is the primary reason we feel the Earth's gravitational pull more than any other object's?

• The Earth is the only object with gravity

• The Earth is closer to us

• The Earth has the most mass nearby

• The Earth is moving faster

Which object in our solar system has the most significant gravitational pull?

• The Earth

• The Moon

• Jupiter

• The Sun

What role does gravity play in the solar system?

• It repels planets from the sun

• It keeps planets in orbit around the sun

• It causes planets to collide

• It has no effect on planets

How does gravity affect the movement of planets in our solar system?

• It causes them to spin faster

• It keeps them in a fixed position

• It makes them move away from the sun

• It maintains their orbit around the sun