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Fossil Fuel
formed millions of years ago out of plants and animals and is usually from deep underground
Renewable Energy
energy that is more easily replenished
Give examples of renewable energy
wind, sunlight, waves and earth’s heat(geothermal energy)
non-renewable energy
sources of energy that can’t be easily replenished like coal, oil and natural gas
Generator
changes energy from one form to another
Engine
machine that converts chemical energy from burning fuel to motion. Used to make trains, cans and buses go.
Coal
solid fossil fuel that can be burned for energy
Oil
liquid fossil fuel burned for energy. Often used to make gasoline and plastics
natural gas
gas that can be burned for energy. It is often used to heat our stoves and homes.
Ethanol
liquid renewable energy made from plants like corn.
prototype
model developed at the end of the engineering design process.
conservation
act of saving, protecting, or using resources wisely.
Where does geothermal energy come from?
inside the earth
Why are fossil fuels considered non-renewable resources?
they will eventually run out, are not easily renewed, are not alternative energy sources, cannot be replaced fast enough for future use.
What do geothermal power plants use from the earth’s interior to generate power?
heat
What are examples of renewable energy resources?
Sun, wind, water, geothermal, biomass
What natural resource does hydroelectricity use?
water
What are some advantages of using renewable energy?
The recourse will never run out and can be generated day and night
Where does solar energy come from?
sun
What is nuclear energy?
It is a nonrenewable resource, used to generate electricity, the waste from it can damage the environment.
What are some of the disadvantages of using coal?
it pollutes the environment and it might run out
Why is hydroelectric power a renewable energy source?
water does not run out, cleaner energy source, water is replenished by precipitation
What kind of factors do you need to consider when designing something?
time, money, materials
What energy conversion takes place in an electric motor?
electrical to energy of motion
