Y7 Energy
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20 terms
Terms | Definitions |
|---|---|
 joule | unit of energy |
| fuel | a substance which releases energy when burned |
| kinetic energy | energy possessed by moving objects |
| chemical energy | energy stored in foods and fuels |
| fossil fuels | coal, oil and gas |
| renewable | can be replaced within a human lifetime |
| non-renewable | will run out |
| hydroelectric power | uses the kinetic energy in falling water to produce electrical energy |
| solar power | uses the energy of the sun to heat water or generate electricity |
| geothermal power | uses the natural heat of the earth to generate electricity or heat buildings |
| wind power | uses the kinetic energy in wind to produce electrical energy |
| wave power | uses the up and down movement of waves to turn a generatr to produce electrical energy |
| insulation | poor conductors of heat used to prevent heat loss from houses |
| energy | the ability to make things happen, do work or cause a change |
| gravitational potential energy | energy an object has when it is lifted up |
| elastic potential energy | energy an object has when it is stretched, squashed or twisted |
| strain energy | another term for elastic potential energy |
| biofuel | Gas or liquid fuel made from plant material (biomass). |
| independent variable | the quantity you change during an experiment |
| dependent variable | the quantity you measure during an experiment |
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