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Producing electricity

The energy resources used to generate electricity can be divided into two categories: nonrenewable and renewable.

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Слайд 1Producing Electricity
Мозговенко Ольга Петровна
Учитель английского языка
ЦО № 1828 «Сабурово» Москва

Producing ElectricityМозговенко Ольга ПетровнаУчитель английского языкаЦО № 1828 «Сабурово» Москва

Слайд 2
The energy resources used to generate electricity can

be divided into two categories:
nonrenewable
and
renewable.

The energy resources used to generate electricity can be divided into two categories: nonrenewable and

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.
Nonrenewable resources cannot be increased. We can make these supplies last longer by using them

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.
The majority of electricity used in the world is generated at power plants that burn

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.
The three forms of fossil fuels are coal, oil, and natural gas.  They are

Слайд 6Nuclear Power
Nuclear power plants use the heat from splitting atoms

to convert water into the steam that turns turbines.

Nuclear Power Nuclear power plants use the heat from splitting atoms to convert water into the steam

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.
Renewable Resources  Renewable energy resources can be replenished in a short period of time, so they

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.
Biomass Biomass is organic matter, such as agricultural wastes, and wood chips and bark left over when

Слайд 9Geothermal Energy

The word "geothermal" comes from the Greek

words geo, for earth, and therme, for heat. So geothermal

means "earth heat."
Geothermal Energy  The word

Слайд 10
Geothermal energy is steam (or hot water that has been

converted to steam) from deep inside the earth.

Geothermal energy is steam (or hot water that has been converted to steam) from deep inside the

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.
Hydrogen  Hydrogen is a colorless, odorless gas. Hydrogen can be converted into electricity through a chemical

Слайд 12Hydropower
Hydroelectric plants use the power of falling water to turn

the turbines that help generate electricity.

Hydropower 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.
Wave power  The energy of the ocean's waves and tides can also be used to generate

Слайд 14
The world's first wave power station is on

the Scottish island of Islay. It generates enough electricity for

about 400 homes.
The world's first wave power station is on the Scottish island of Islay. It generates

Слайд 15Solar Energy
Solar energy is generated without a turbine or electromagnet..

Solar Energy Solar energy is generated without a turbine or electromagnet..

Слайд 16
Special panels of solar cells, or modules, can capture sunlight

and convert it directly into electricity

Special 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.
Wind PowerWind power is renewable energy that uses the force of the wind to spin turbines. These

Слайд 18
A very large wind farm can generate enough electricity for

all the homes in a city of about one million

people.
A very large wind farm can generate enough electricity for all the homes in a city of

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