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Energy of Biomass |
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In the small picture at the left, huge claws are
mixing garbage. This mixing helps it to dry. Then
the garbage is burned in a power plant to make
electricity just like power plants that burn coal or
oil. Most of the garbage consists of plant materials
such as paper and wood. This garbage is an
example of biomass. Biomass is material that
was recently alive. Biomass can be animal waste, wood, grasses, or food wastes.
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Not all biomass is burned in power plants.
Some is turned into fuels that can run cars and
trucks. Chemicals are added to biomass, and
then biomass is turned into liquid fuel in a few
steps. High temperatures can turn biomass into
a gas similar to natural gas. This gas can be used
in the same ways as natural gas. |
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Biomass is a resource that we will never
run out of. We will always have garbage. By
using biomass as a resource, less garbage
will be taken to landfills. One disadvantage
is that burning biomass does cause air
pollution. |
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1. |
Describe two ways that people use energy
from the Sun. What are the advantages and
disadvantages of getting energy in these ways? |
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2. |
What kind of energy uses uranium as a fuel?
What are the advantages and disadvantages
of getting energy in this way? |
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3. |
How do people use geothermal energy? |
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4. |
Use Internet or
library resources to find what sources of
renewable and nonrenewable energy are
used in your state. |
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This garbage will be burned in
an electric power plant. |
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People can swim during the
winter in this pond that is
warmed by a geothermal
power plant in Iceland. |
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