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15 Cards in this Set

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Law that states that all objects in the universe are attracted to all other objects.
The Law of Universal Gravitation
Law that states that the total amount of energy in a system is always the same.
It also says energy cannot be created or destroyed.
Law of Conservation of Energy
The property of matter that keeps it moving in a straight line or keeps it at rest.
Inertia
A force that opposes or acts against motion when two surfaces rub against eachother.
Friction
The force of repulsion or attraction between poles of magnets
Magnetism
Pushing
Repulsion
Pulling
Attraction
The force that pulls all objects in the universe toward each other.
Gravity
A push or pull that causes an object to move, stop or change direction
Forces
The amount of matter in an object
Mass
A measure of the pull of gravity on an object.
Weight
A change in motion caused by unbalanced forces or a change in velocity
Acceleration
A fuel formed from the remains of once-living organisms
Fossil Fuels
Any of the useful minerals and other materials that people take from the earth
Natural resources
Resources that are replaced as they are used.
Renewable energy