Fossil fuels produce much of the world's energy, however
energy is also produced from other sources. Hydroelectricity is
electrical current that is produced from the energy of falling
water. Hydroelectric power plants are built near rivers. First
a dam is built across the river so the water flow can be monitored.
A huge volume of water is stored in a reservoir. A reservoir is
place where the water is stored and collected. As the water spills
over the dam, it goes through pipes to a powerhouse. The energy of
the falling water pushes the blades on a turning shaft and is changed into
Nuclear energy from fission is another source of
energy. Fission means, "to split." Fission occurs
when an atom is broken apart. More energy is produced in this way
than by atoms joining together.
The controlled release of energy from atomic fission is
what makes heat in nuclear power plants. The heat is then used to
make steam. The steam is sent to turn a generator, just like in a
power plant when heat is produced by burning fossil fuels.
Solar and wind energy sources are
currently being used and expanded in California. In San Francisco, thousands of windmills provide some of the electrical power. The
world's largest solar energy plant is in the Mojave Dessert located in California.
Geothermal energy is electricity produced from the heat
deep inside the earth. Remember the inside of the earth is very
hot. When rain seeps into the earth through deep cracks in the
surface and combines with the heat, the water is turned into steam.
The steam rises back up through these deep cracks, is trapped and is used
to spin turbines and run generators.
Directions: Answer the questions about other
sources of energy.
electrical current that is produced from the energy of falling water.
is place where the water is stored and collected.
Hydroelectric power plants are built near
Energy of falling water pushes the blades on a turning shaft and is changed into
Fission occurs when an
is broken apart.
The controlled release of energy from atomic
what makes heat in nuclear power plants.
Solar energy and
provide some the electrical power used in the state of California.
energy is electricity produced from the heat
deep inside the earth.
Which of the following is a true statement?
energy is released when an atom breaks apart than when atoms join
More energy is released when
atoms join together than when an atom breaks apart.
When water combines with the heat, the water is turned into
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