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Producing Electricity
Содержание
- 1. Producing Electricity
- 2. The energy resources used to
- 3. Nonrenewable resources cannot be increased.
- 4. The majority of electricity used
- 5. The three forms of fossil
- 6. Nuclear Power Nuclear power plants use the
- 7. Renewable Resources Renewable energy resources can
- 8. Biomass Biomass is organic matter, such as
- 9. Geothermal Energy The word "geothermal" comes
- 10. Geothermal energy is steam (or hot
- 11. Hydrogen Hydrogen is a colorless, odorless
- 12. Hydropower Hydroelectric plants use the power of
- 13. Wave power The energy of the
- 14. The world's first wave power
- 15. Solar Energy Solar energy is generated without a turbine or electromagnet..
- 16. Special panels of solar cells, or modules, can capture sunlight and convert it directly into electricity
- 17. Wind PowerWind power is renewable energy that
- 18. A very large wind farm can generate
- 19. Скачать презентанцию
The energy resources used to generate electricity can be divided into two categories: nonrenewable and renewable.
Слайды и текст этой презентации
Слайд 3 Nonrenewable resources cannot be increased. We can make
these supplies last longer by using them wisely, but when
they are gone we will not have any more.
Слайд 4 The majority of electricity used in the world
is generated at power plants that burn fossil fuels to
heat water and make steam. The steam is highly pressurized and directed at turbine ['tɜbaɪn] blades to make them spin.
Слайд 5 The three forms of fossil fuels are
coal,
oil, and
natural gas.
They are known as
fossil fuels because they were formed from the fossilized remains of animals or plants that lived long ago.
Слайд 6Nuclear Power
Nuclear power plants use the heat from splitting atoms
to convert water into the steam that turns turbines.
Слайд 7Renewable Resources
Renewable energy resources can be replenished in
a short period of time, so they will never be
all used up. Energy companies all over the world are using renewable resources more and more to generate electricity.
Слайд 8Biomass
Biomass is organic matter, such as agricultural wastes, and wood
chips and bark left over when lumber is produced. Biomass
can be burned to heat water to make steam, which turns a turbine to make electricity. It can also be converted into a gas, which can be burned to do the same thing.
Слайд 9Geothermal Energy
The word "geothermal" comes from the Greek
words geo, for earth, and therme, for heat. So geothermal
means "earth heat."
Слайд 10
Geothermal energy is steam (or hot water that has been
converted to steam) from deep inside the earth.
Слайд 11Hydrogen
Hydrogen is a colorless, odorless gas. Hydrogen can
be converted into electricity through a chemical reaction in a
device called a fuel cell. Converting hydrogen into electricity produces no pollution—only water and heat.
Слайд 12Hydropower
Hydroelectric plants use the power of falling water to turn
the turbines that help generate electricity.
Слайд 13Wave power
The energy of the ocean's waves and
tides can also be used to generate electricity with dams
that force ocean water through turbines. This is called tidal energy, or wave power.
Слайд 14 The world's first wave power station is on
the Scottish island of Islay. It generates enough electricity for
about 400 homes.
Слайд 16Special panels of solar cells, or modules, can capture sunlight
and convert it directly into electricity
Слайд 17Wind Power
Wind power is renewable energy that uses the force
of the wind to spin turbines. These spinning turbines generate
electricity.
Слайд 18A very large wind farm can generate enough electricity for
all the homes in a city of about one million
people.
