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