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vocab
types of energy
energy conversions
conservation of energy
energy resources
100
the ability to do work
What is energy?
100
the energy of motion
What is kinetic energy?
100
a change from one form of energy to another
What is energy conversion?
100
a force that opposes motion
What is friction?
100
a resource that forms much slower than it is consumed
What is a nonrenewable resource?
200
the combination of kinetic and potential energy
What is mechanical energy?
200
mass x speed squared divided by 2
What is the formula to find kinetic energy?
200
energy stored in a stretched rubber band
What is elastic potential energy?
200
energy cannot be created or destroyed
What is the law of conservation of energy?
200
a natural resource that can be replaced at the same rate it is used
What is a renewable resource?
300
the energy of position
What is the potential energy?
300
the formula for calculating gravitational potential energy
What is weight x height?
300
the use of light energy by plants to make new substances that have chemical energy
What is photosynthesis?
300
this is created in every type of energy conversion
What is thermal energy?
300
nonrenewable energy formed from the remains of organisms that lived long ago
What are fossil fuels?
400
converts light energy into kinetic energy to measure energy from the sun
What is a radiometer?
400
all of the kinetic energy due to random motion of particles
What is thermal energy?
400
a battery changes __ energy into __ energy
What is chemical energy into electrical energy?
400
a comparison of the amount of energy before a conversion and the amount of useful energy after a conversion
What is energy efficiency?
400
solar, water, and wind are examples of this kind of energy resources
What are renewable energy resources?
500
organic matter that is burned to release energy
What is biomass?
500
the energy that comes from changes in the mucleus of an atom
What is nuclear energy?
500
a group of objects that transfer energy only to each other
What is a closed system?
500
this is impossible because energy conversions always result in the production of waste thermal energy
What is a perpetual motion machine?
500
energy from "hot spots" in the Earth's crust
What is geothermal energy?