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Science Topic 2
vocabulary Human uses of energy
| Term | Definition |
|---|---|
| fuel | a substance that releases energy when it burns |
| combustion | the burning of a fuel to produce heat and light |
| turbine | a device that contains a wheel with blades that rotate by pressure of moving water, steam and air |
| generator | a device that changes the energy of motion into electrical energy |
| battery | a device that stores chemical energy that can change into electrical energy |
| device | objects made for a specific purpose |
| primary | first or most important |
| fossil fuel | a substance produced by pressure and decaying organisms that is used for energy |
| coal | a solid fossil that is burned to transfer energy |
| petroleum | a liquid fossil fuel that can be burned to transfer energy |
| natural gas | a fossil fuel gas that is burned for energy |
| nuclear fuel | an energy source made from unstable elements, such as uranium |
| uranium | an unstable element used by humans as an energy source |
| outcome | the result of an event |
| geothermal energy | energy created by pressure and heat underneath Earth's crust |
| hydropower | energy from the movement of water |
| available | can be used |
| emission | the release of something into the environment |
| pollutant | a harmful substance released into the environment |
| scrubber | a device in a power plant that reduces the amount of released pollutants sent into the air |
| greenhouse gas | a gas that makes the atmosphere able to hold more heat, such as carbon dioxide and water vapor |
| impact | an effect |
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