It keeps on going, and going, and going

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It keeps on going, and going, and going
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RENEWABLE ENERGY

• ENERGY FROM SOURCES THAT ARE CONSTANTLY BEING
  FORMED.
• Examples Solar energy, wind energy, geothermal
  energy, hydroelectricity, and biomass.

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SOLAR ENERGY

• SOLAR ENERGY IS POWER FROM THE SUN!
• The sun radiates energy from nuclear fusion
  reactions in its core. This energy powers the
  wind, plant growth, and the water cycle!

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SO NEARLY ALL RENEWABLE ENERGY COMES FROM THE
SUN!
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Passive Solar Heating

• Passive solar heating uses the suns energy to
  heat something directly.

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Many people in the Northern Hemisphere have
windows that face south, because they receive the
most solar energy. This energy warms the house
during the day, and this heat is slowly released
at night.
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Active Solar Heating

• Active solar heating is gathering the suns
  energy by using collectors. This energy is often
  used to heat water in a building!

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Active Solar Heating Cont.

• Solar collectors capture the suns energy to heat
  a liquid. This liquid passes through a heat
  exchanger that heats water for the building.
• More than 1 million homes in the US use active
  solar energy to heat water!

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Photovoltaic Energy

• Photovoltaic cells, are solar cells that convert
  the suns energy into electricity. They store
  some of the suns energy in batteries for use
  when the sun is not shining.

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These are what you might think of as solar
panels.

• These solar panels power everything from
  calculators to space stations and currently
  provide energy for over 1 million households in
  developing countries.