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Solar Cells P1
| Question | Answer |
|---|---|
| Roughly, how are solar cells used? | They generate electric energy from heat energy coming from the sun |
| What can they be used in?(4) | • Watches • Calculators • Road signs • Satellites |
| Why are solar cells good for using in these appliances? | Because they don't require a lot of energy to run |
| What are the advantages of solar cells?(4) | • No pollution • No running costs • Reliable in sunny countries • No running costs |
| What are the disadvantages of solar cells?(4) | • Can't be used at night • High initial costs • Only practical on small scale • Too expensive to connect to national grid |