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Explain how convection currents are set up in a cavity wall with no insulation.
Inner wall heats the air which becomes less dense and rises.
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The family in the house is advised to reduce the temperature in the main living area in winter time to save money. Explain how this would increase the payback time for the improvements that are undertaken.
Reduced temperature difference inside and outside results in less money spent and saved.
2 of 7
State one method for the long term storage of radioactive waste.
Stored underground
3 of 7
Outline one advantage and one disadvantage of storing the waste in this way.
It's safe from terrorism however earthquakes will not protect the waste.
4 of 7
Describe the National grid
A network of power cables that connect power sations to consumers scuh as factories, homes and schools.
5 of 7
Describe a geosynchronous satellite.
A geosynchronous satellite stays above the same point on the Earth and orbits the Earth in 24 hours.
6 of 7
Explain how the dark line arise on the spectrum and outline the information that theygive about those galaxies.
Light coming from the centre of stars is absorbed by the gases in their atmospheres. Their frequency gives imformation baout the galaxies present and the fact they are red-shifted gives imformation about theirdistance away- by the application of Hubb
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Other cards in this set

Card 2

Front

The family in the house is advised to reduce the temperature in the main living area in winter time to save money. Explain how this would increase the payback time for the improvements that are undertaken.

Back

Reduced temperature difference inside and outside results in less money spent and saved.

Card 3

Front

State one method for the long term storage of radioactive waste.

Back

Preview of the front of card 3

Card 4

Front

Outline one advantage and one disadvantage of storing the waste in this way.

Back

Preview of the front of card 4

Card 5

Front

Describe the National grid

Back

Preview of the front of card 5
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