science revison

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what are solar panles
Solar panels do not generate electricity, but rather they heat up water. They are often located on the roofs of buildings where they can receive heat energy from the sun. This diagram outlines how they work.
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why do need solar engergy
Photovoltaic and solar-thermal panels generate free electricity by converting sunlight into electricity or transferring the sun's heat to heating and ventilation systems. The use of solar panels to generate energy provides many benefits, which includ
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how do solar paneles work
Cold water is pumped up to the solar panel where it heats up and is transferred to a storage tank. A pump pushes cold water from the storage tank through pipes in the solar panel. The water is heated by heat energy from the sun and returns
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whats the advanges of the solar pannels
solar energy is a renewable energy resource no harmful polluting gases are produced.
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what are disadvanges
solar panels may only produce very hot water in very sunny climates, and in cooler areas may need to be supplemented with a conventional boiler although warm water can be produced even on cloudy days, solar panels do not work at night.
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what is u vales
U-values measure how effective a material is an insulator. The lower the U-value is, the better the material is as a heat insulator. For example, here are some typical U-values for building materials:
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Other cards in this set

Card 2

Front

Photovoltaic and solar-thermal panels generate free electricity by converting sunlight into electricity or transferring the sun's heat to heating and ventilation systems. The use of solar panels to generate energy provides many benefits, which includ

Back

why do need solar engergy

Card 3

Front

Cold water is pumped up to the solar panel where it heats up and is transferred to a storage tank. A pump pushes cold water from the storage tank through pipes in the solar panel. The water is heated by heat energy from the sun and returns

Back

Preview of the back of card 3

Card 4

Front

solar energy is a renewable energy resource no harmful polluting gases are produced.

Back

Preview of the back of card 4

Card 5

Front

solar panels may only produce very hot water in very sunny climates, and in cooler areas may need to be supplemented with a conventional boiler although warm water can be produced even on cloudy days, solar panels do not work at night.

Back

Preview of the back of card 5
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