Vocabulary
This is the attractive force between all objects in the universe.
What is gravity?
This changes depending on what planet you are on.
What is weight?
These objects in the universe have gravity.
What is everything?
Is Gravity a pulling force or a pushing force?
pulling force
Since molecules of air are so small, do they have gravity? Why?
What is yes? Everything that has mass has a gravitiational force. Although air is very light, it still has mass.
The repeating path that one object in space makes around another.
What is orbit?
This stays the same no matter where you are in the universe.
What is mass?
Why does the Earth have a stronger gravitational force than our moon?
Because the Earth has more mass. More mass = more gravity.
If the mass of two objects are constant and you increase the distance between then, what happens to the gravitational force between them?
What is decrease?
Gravity and magnetism act the same way. Are gravity and magnetism the same thing?
What is no?
This is how much space an object takes up.
What is mass?
If I weigh 100lbs on Earth and travel to the moon and weigh 17lbs, did my mass change? Explain.
What is no? Mass never changes; weight depends on a planet's gravity.
What has a greater gravitational force, the Earth or Jupiter?
What is Jupiter because it has more mass?
Name three ways to decrease gravity?
1.) decrease mass
2.) increase distance
3.) decrease mass while increasing distance
What two properties determine the strength of gravity?
1) Mass of an object 2) Distance between the center of two objects
How far an object is from another object is called what?
What is a distance?
What would happen if you stood on a planet that was 500x the mass of the Earth?
Your body would crush under the immense gravity.
Would you have more mass on the Earth or floating in space? Why?
What is neither? Your mass is the same anywhere you are in the universe.
How do we increase gravity?
1.) decrease distance
2.) increase mass
3.) decrease distance while increasing mass
If Earth is 93 million miles away from the sun and Neptune is 2.8 billion miles away from the sun, which planet is less attracted to the sun and why?
What is the Neptune because it is significantly farther. The farther the objects are, the more lesss attracted they are to each other.
This is the measure of how strong the force of gravity is on someone/something.
What is weight?
How might your mass change over time?
When you grow/eat/develop, your mass increases because your body takes up more space.
On Earth, why can't we observe the gravitational force between two cars or two pencils?
Because the mass of a car and a pencil are too small in comparison to the mass of Earth.
At what rate does gravity work on an object if we remove air resistance?
9.8m/s2
Is there gravity in the universe? Explain?
Yes, there is mass present in the universe.