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Y9SciPhyTopic6
Year 9 Science Physics Topic 6 Energy and The Future
| Question | Answer |
|---|---|
| Thermal energy | energy transferred by heating. |
| Light energy | the energy of visible light. |
| Electrical energy | energy transferred by electricity. |
| Sound energy | the energy transferred by sound waves. |
| Chemical potential energy | the energy stored in matter, which can be released by a chemical reaction( such as combustion). |
| Nuclear potential energy | the energy stored in the nuclei of atoms. |
| Elastic potential energy | the energy stored by things that have been stretches or squashed and can spring back. |
| Gravitational potential energy | the energy stored in things that fall. |
| Energy transfer | energy being moved from one place to another, possibly with a change of the form of energy at the same time. |
| System | anything in which we are studying changes. Systems can be very complex (e.g. a planet) or quite simple (e.g. a piece of metal). |
| Law of conservation of energy | states that energy cannot be created or destroyed, although energy may transform from one form to another. |
| Efficiency | the proportion of input energy that is transferred to a useful form. |
| Radiation |
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