What is Gravity
Objects with more ____ will be affected more by gravity.
Mass
Does gravity change overtime?
True/False
True
Is there gravity in outer space?
Yes
Can you see gravitational redshift?
No
Does being underwater affect the gravitational pull?
No
Why is an object that has less mass than us not attracted to us because we weigh more than it.
Because the Earth has more mass, therefore it is more attracted to the Earth.
Gravity can only occur between two ____.
Masses
As you get ____ away from an object, the gravitational pull will decrease.
Farther
A ball falls faster than a feather.
True/False
False, they fall at the same speed.
Name three things that the gravitational pull of earth affects.
The tide, how far you can jump, How far we are from the sun, Holds our atmosphere down, etc
Definition of Gravity
Gravity is an invisible force that attracts one object to another object that has mass
Definition of air resistance
Air resistance is the forces that are going against an object that is passing through the air
Give two examples of when you feel weightless (not is space).
Elevator, Roller Coaster going down, Airplane, When you are free falling.
Why do you feel weightless in space?
There is nothing stopping you from falling.
To be able to escape earths gravitational pull you would have to travel ____ miles away.
7 miles
If you weigh a hundred on Earth how much would you weigh on the moon.
17 pounds
Daily Double
What does GRACE stand for? What does it do?
Gravity Recovery and Climate Experiment; It studies key changes in the Earth that know one would notice when you are on the Earth.
What kind of balloons float and what kind don't.
Helium balloons float and balloons blown up by the mouth don't.
Why do balloons that are blown up by the mouth not float.
Because the air outside of the balloon is lighter than the balloon.
If you weigh 100 on earth you will weigh ____ on Neptune
114
What is the redness called when gravity changes a lights frequency.
Gravitational Redshift
Gravity is the strongest force out of the four fundamental forces:
Gravity, Electromagnetism, Strong interaction, Weak interaction.
True/False
False
Why do bubbles/balloons float?
The air inside the bubble is less dense than the air outside the bubble. Therefore the air is pushing the bubble upward.
How fast do the waves that gravity makes move?
At light speed.
Daily Double
What is the equation for gravity?
Fgrav=mg=68*9.8=666N