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What are the alternative energy sources?
Hydroelectric, geothemal, wind, nuclear energy
What is the main source of energy ?
Sun
What are the example of fossil fuels ?
Coal, oil, and natural gas
Where do solar cels get light energy from ?
From the Sun
What is solar energy ?
Solar energy is Solar energy is the energy from the sun that is converted into electricity or heat
State the energy conversion in windmills !
Kinetic energy (wind) - kinetic energy (blades) - kinetic energy (gears)
State the energy conversion in wind turbines
kinetic energy (wind) - kinetic energy (blades) - electrical energy (generator)
names limited sources of energy!
coal, oil and natural gas
why are fossil fuels called limited sources of energy?
because the will not last forever and will run out
names other sources of energy that are renewable!
sun,running water, and wind
what can we do to conserve energy?
walk or ride a bicycle, switch off electrical appliances when they are not in use (OPEN ANSWER))
What energy does the running water has?
Gravitational potentia energy - kinetic energy
what is hydroelectric energy?
Hydroelectric energy is a form of energy that generates electricity using the power of running water
What are the two main forms of energy that we can get from the sun ?
heat energy and light energy
Name one use of sound !
we use sound for talking
Why is electrical energy one of the most useful forms of energy ?
Because it can be converted to other forms of energy such as light, heat, and sound.
