5360240
Description
Flashcards by Princess Terin, updated more than 1 year ago
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Created by Princess Terin
over 10 years ago
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| Question | Answer |
| What is defined as ‘the energy transferred per second’ and is measured in watts? | Power |
| What is measured in kilowatt hours? | Energy from the mains supply. |
| Give one advantage of low energy appliances. | cost efficiency, saving energy and resources. |
| Give one disadvantage of low energy appliances. | initial cost, use of extra resources to manufacture new device, cost of disposal of old device |
| State the 8 types of energy. | Heat, light, sound, nuclear, kinetic, potential, chemical, electrical |
| Define efficiency. | The proportion of energy usefully transferred. |
| For an object to remain at a constant temperature, what must be balanced? | The amount of power radiated as absorbed. |
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