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Sources of energy :red_flag: :star::+1: - Coggle Diagram
Sources of energy :red_flag: :star::+1:
The sun is our main source of heat and light energy
Solar energy is trapped by
Solar cells
Solar Panels
Will not run out
Uses
Photosynthesis
To heat water
Provide electricity
Why is it the main source
Plants need light energy from the sun to make food, energy is passed from plants to animals
Traced back to the sun
Causing rain by making the water evaporate
Wind
Will not run out
Uses
run wind turbines
generate electricity
run windmills
to extract oil from seeds
to grind grain
Heat from sun helps create winds that blow across earth
Running water
Will not run out
has potential kinetic energy(pke)
Hydroelectric powerstations to generate electricity
from waterfalls, rivers and streams
Fuels
Has chemical potential energy
Examples
Wood
Coal
Oil
Natural gas
Will run out
fossil fuels were formed from remains of tiny plants and animals
Classify by
Renewable
Like: Biomass, geothermal energy, hydropower solar energy and wind energy
Can replenish in a short time
Mainly used to produce electricity
Non-renewable
Where most of our energy come from
Like: Coal, Petroleum and natural gas
Why to conserve energy?
One of our main needs of Earth's growing population
How to conserve energy?
Use minimum amount of electricity we need
Not wasting energy to allow fossil fuel to last longer
1 more item...
Walk, bike, instead of using vehicles that use fuels
Switching off electrical appliances when not in use
Use fan, not air conditioner
Now, main energy sources are fossil fuels which will run out
It has limited supply