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What is Energy?
Conversions
Conservation
Energy Resources
Miscellaneous
100
The ability to do work
What is energy?
100
Convert energy into a more useful form
What is a machine?
100
Energy is not created or destroyed
What is the law of conservation of energy?
100
Natural resource that can be converted into other forms of energy to do useful work
What is a natural resource?
100
Caused by the sun's heating of the Earth's surface
What is wind?
200
Joules
What is the unit for energy?
200
Gravitational potential energy
What energy form is greatest as a swing is at it's highest point?
200
Produces thermal energy in machines
What is friction?
200
Fossil fuels and nuclear energy
What are examples of nonrenewable resources?
200
Heat energy
What is thermal energy?
300
Kinetic energy
What is the energy of motion?
300
Food energy
What is chemical?
300
DAILY DOUBLE Puts out exactly as much energy as it takes in
What is a perpetual motion machine?
300
Source of most energy on Earth
What is the sun?
300
Depends on weight and height
What is gravitational potential energy?
400
Potential energy
What is the energy of position?
400
DAILY DOUBLE Energy conversion plants make
What is light to chemical?
400
Compares the amount of energy before a conversion with the amount of useful energy after a conversion
What is energy efficiency?
400
Cannot be replaced after they are used
What are nonrenewable resources?
400
Total of the kinetic and potential energy of an object
What is mechanical energy?
500
Speed and mass
What two things determine the amount of kinetic energy?
500
Changing from one form of energy to another
What is energy conversion?
500
Group of objects that transfer energy only to each other
What is a closed system?
500
Sun, wind, water, geothermal energy, biomass
What are renewable resources?
500
Energy of moving electrons
What is electrical energy?