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Vocabulary I
Vocabulary II
Vocabulary III
Vocabulary IV
Vocabulary V
100
The ability to do work.
What is energy?
100
The energy of a compound that changes as its atoms are rearranged to form a new compound. A form of potential energy.
What is chemical energy?
100
A change from one form of energy into another.
What is energy conversion?
100
A machine that would put out exactly as much energy as it takes in.
What is a perpetual motion machine?
100
Can be used and replaced in nature over a relatively short period of time.
What are renewable resources?
200
The energy of motion; depends on speed and mass.
What is kinetic energy?
200
The energy of electric charges.
What is electrical energy?
200
The use of light energy to produce a new substance with chemical energy.
What is photosynthesis?
200
A natural resource that can be converted by humans into other forms of energy in order to do useful work.
What is energy resource?
200
Electrical energy produced from falling water.
What is hydroelectricity?
300
The energy of position or shape.
What is potential energy?
300
The energy caused by an objects vibrations.
What is sound energy?
300
A comparison of the amount of energy before a conversion with the amount of useful energy after a conversion.
What is energy efficiency?
300
Cannot be replaced after they are used or can be replaced only over thousands or millions of years.
What are nonrenewable resources?
300
Thermal energy resulting from the heating of the Earth's crust.
What is geothermal energy?
400
The total energy of motion and position of an object.
What is mechanical energy?
400
Produced by the vibrations of electrically charged particles.
What is light energy?
400
A well-defined group of objects that transfer energy between one another.
What is a closed system?
400
Energy resources that formed from the buried remains of plants and animals that lived millions of years ago.
What are fossil fuels?
400
Organic matter, such as plants, wood and waste, that can be burned to release energy.
What is biomass?
500
The total energy of the particles that make up an object.
What is thermal energy?
500
The energy associated with changes in the nucleus of an atom.
What is nuclear energy?
500
Energy can be neither created nor destroyed.
What is law of conservation of energy?
500
The nucleus of a uranium atom is split into two smaller nuclei, releasing nuclear energy.
What is nuclear fission?
500
Both energy and work are expressed in this.
What is joules?