Science - What is Gravity - Week 25

Is gravity the same throughout the entire universe?

No

Is gravity a pulling or pushing force? Provide evidence to support your answer.

Pulling: when objects fall, they are moving toward the Earth. A pulling force moves objects toward each other.

Do all objects have gravitational force?

Yes

Why does an object weigh less on the moon than on Earth?

because the moon's gravity is lower

Which has the most mass out of a cat, dog, elephant, or mouse?

elephant

Gravity affects an object's__________

mass

Which has the least mass out of a cat, dog, elephant, or mouse?

mouse

Gravity is a __________ force

pulling

What does "down" mean to a physicist?

the direction of gravity

What type of force is used in launching the Space Shuttle?

thrust

Gravity's affect on an object's mass causes an object to create its___________

weight

Explain how a person can jump if Earth's gravity is so strong.

Earth's gravity can be opposed by a strong enough thrust in the opposite direction. When a person jumps, they are pushing against the ground with greater force than gravity. Eventually, the force of gravity pulls them down again.

Which physicist first studied gravity?

Isaac Newton