ENERGY SOURCES

People, plants, and animals have something in common. All need energy to survive. Where does energy come from? Energy comes from many sources. Plants, for example, collect light energy from the Sun and make their own food. Animals get energy from the food they eat. Animals convert the energy stored in food into energy they can use.

Of course, we get energy from food, too. Food keeps our bodies moving, but we also use energy in other ways. We convert some forms of energy to make our lives easier and more comfortable.

For renewable energy, there are solar, wind, hydropower, geothermal and biomass energy.

- Solar energy is heat and light energy from the Sun and it is renewed day after day from the Sun shines

- Wind energy is motion energy from the wind and renewed day after day as the wind blows

- Hydropower energy is from moving water and renewed day after day in waves and flowing rivers

- Geothermal energy is heat and steam energy beneath the Earth’s surface

- Biomass is generated from plant material and animal waste

For non renewable energy, there are coal, oil, natural gas, propane gas and nuclear energy.

- Coal is solid and formed after milions of years, mined from the Earth

- Oil is liquid and formed after milions of years, pumped from the ground

- Natural gas is colorless odorless gas and formed after milions of years, pumped from the ground

- Propane gas is natural gas that becomes a liquid gas at high pressure or at low temperature and found with natural gas and oil

- Nuclear energy is stored in atoms-the smallest particles of chemical elements and formed using uranium ore which is mined from the earth

To sum up, renewable energy is important to our future because it doesn’t run out while the non renewable energy will come to the depletion.

David and Patricia Armentrout (www.rourkepublishing.com)

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