🗊Alternative sources of energy

Категория: Английский язык
Нажмите для полного просмотра!
Alternative sources of energy, слайд №1Alternative sources of energy, слайд №2Alternative sources of energy, слайд №3Alternative sources of energy, слайд №4Alternative sources of energy, слайд №5Alternative sources of energy, слайд №6Alternative sources of energy, слайд №7Alternative sources of energy, слайд №8Alternative sources of energy, слайд №9Alternative sources of energy, слайд №10Alternative sources of energy, слайд №11Alternative sources of energy, слайд №12Alternative sources of energy, слайд №13Alternative sources of energy, слайд №14Alternative sources of energy, слайд №15Alternative sources of energy, слайд №16Alternative sources of energy, слайд №17Alternative sources of energy, слайд №18
Скачать
Вы можете ознакомиться и скачать Alternative sources of energy. Презентация содержит 18 слайдов. Презентации для любого класса можно скачать бесплатно. Если материал и наш сайт презентаций Вам понравились – поделитесь им с друзьями с помощью социальных кнопок и добавьте в закладки в своем браузере.

Слайды и текст этой презентации

Слайд 1


Alternative sources of energy
Описание слайда:
Alternative sources of energy

Слайд 2


Alternative sources of energy: Wind power. Solar energy. Geothermal energy. Water power: hydro-electric power; tidal power; wave power
Описание слайда:
Alternative sources of energy: Wind power. Solar energy. Geothermal energy. Water power: hydro-electric power; tidal power; wave power

Слайд 3


Wind power
Описание слайда:
Wind power

Слайд 4


Wind power The most common way of getting energy from the wind is through setting up “Wind farms”. When they were first introduced they were very expensive, however, over the years, initial costs have fallen, and therefore the cost of getting electricity from the wind has dropped considerably.
Описание слайда:
Wind power The most common way of getting energy from the wind is through setting up “Wind farms”. When they were first introduced they were very expensive, however, over the years, initial costs have fallen, and therefore the cost of getting electricity from the wind has dropped considerably.

Слайд 5


Wind power The advantages: wind power enables electricity to be produced in an environmentally friendly way – the turbines do not produce chemical or radioactive emissions. The ground on which the turbines are positioned can still be used for agricultural purposes. The disadvantages: wind farms can be costly to maintain and electricity produced by this method is more expensive than that produced by other means; the noise has been criticized by some people who live very close to this; the turbines can cause some slight electromagnetic interference, which can cause interference with television signals and some communication equipments.
Описание слайда:
Wind power The advantages: wind power enables electricity to be produced in an environmentally friendly way – the turbines do not produce chemical or radioactive emissions. The ground on which the turbines are positioned can still be used for agricultural purposes. The disadvantages: wind farms can be costly to maintain and electricity produced by this method is more expensive than that produced by other means; the noise has been criticized by some people who live very close to this; the turbines can cause some slight electromagnetic interference, which can cause interference with television signals and some communication equipments.

Слайд 6


Solar power
Описание слайда:
Solar power

Слайд 7


Solar power The photovoltaic effect. Photovoltaic cells (PV’s) used as roof tiles. Designing buildings to collect the heat. Large glass windows, heating water pipes
Описание слайда:
Solar power The photovoltaic effect. Photovoltaic cells (PV’s) used as roof tiles. Designing buildings to collect the heat. Large glass windows, heating water pipes

Слайд 8


Solar power The advantages: no extra land space is needed; can also be situated in urban areas, where there is plenty of available space; easy to install; replace the need for other materials, such as tiles; generate more electricity than is needed at certain times in the day, so can be sold back to local electricity companies. The disadvantages: depend on changeable weather; costly installation.
Описание слайда:
Solar power The advantages: no extra land space is needed; can also be situated in urban areas, where there is plenty of available space; easy to install; replace the need for other materials, such as tiles; generate more electricity than is needed at certain times in the day, so can be sold back to local electricity companies. The disadvantages: depend on changeable weather; costly installation.

Слайд 9


Alternative sources of energy, слайд №9
Описание слайда:

Слайд 10


Geothermal energy There are hot springs in Iceland, which get their warm from the Earth
Описание слайда:
Geothermal energy There are hot springs in Iceland, which get their warm from the Earth

Слайд 11


Geothermal energy The advantages: no fossil fuel burning is required; emit only excess steam and very few trace gases; take up very little land; geothermal heat pumps can be used nearly everywhere. advanced drilling techniques minimize the impact of drilling wells; electricity produced more “available” as fossil-fuelled power plants produce electricity 65-75% of the time compared to 90% from geothermal power plants.
Описание слайда:
Geothermal energy The advantages: no fossil fuel burning is required; emit only excess steam and very few trace gases; take up very little land; geothermal heat pumps can be used nearly everywhere. advanced drilling techniques minimize the impact of drilling wells; electricity produced more “available” as fossil-fuelled power plants produce electricity 65-75% of the time compared to 90% from geothermal power plants.

Слайд 12


Water power
Описание слайда:
Water power

Слайд 13


Tidal power
Описание слайда:
Tidal power

Слайд 14


Tidal power The advantages: using natural forces; in the long-term it could enable cheaper electricity; once up and running, quite safe to the environment. The disadvantages: tidal power generators can be quite expensive to set-up; the disruption to the area; the risk of pollution to the river.
Описание слайда:
Tidal power The advantages: using natural forces; in the long-term it could enable cheaper electricity; once up and running, quite safe to the environment. The disadvantages: tidal power generators can be quite expensive to set-up; the disruption to the area; the risk of pollution to the river.

Слайд 15


Hydro-electric power
Описание слайда:
Hydro-electric power

Слайд 16


Hydro-electric power The advantages: pollution free and safe when up and running The disadvantages: creating it there can be tremendous disruption and upset to the environment, animals and nearby residents; finding sites large enough for this is quite hard.
Описание слайда:
Hydro-electric power The advantages: pollution free and safe when up and running The disadvantages: creating it there can be tremendous disruption and upset to the environment, animals and nearby residents; finding sites large enough for this is quite hard.

Слайд 17


Wave power It works by capturing mass of kinetic energy created by waves. Building dams or pipes for the water to go up.
Описание слайда:
Wave power It works by capturing mass of kinetic energy created by waves. Building dams or pipes for the water to go up.

Слайд 18


Wave power The advantages: with waves which are around 400 m long 700 kilowatts of electricity per metre could be captured; if a suitable site could be found, cheaper and environmentally friendly energy could be created The disadvantage: disruptive to other industry, such as fishing.
Описание слайда:
Wave power The advantages: with waves which are around 400 m long 700 kilowatts of electricity per metre could be captured; if a suitable site could be found, cheaper and environmentally friendly energy could be created The disadvantage: disruptive to other industry, such as fishing.

Скачать

Похожие презентации
Mypresentation.ru
Загрузить презентацию