105251
Description
Flashcards by katiehumphrey, updated more than 1 year ago
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Created by katiehumphrey
about 11 years ago
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| Question | Answer |
| Renewable | solar wind wave tidal geothermal |
| Non-renewable | oil coal uranium biofuel natural gas |
| Geothermal energy | cold water pumped down to the ground > heated and turns to steam > goes up to a turbine > generates electricity |
| The national grid | |
| Waves | transverse > perpendicular vibrations longitudinal > parrallel vibrations |
| Wave properties |
Image:
wave (image/png)
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| Reflection | |
| Refraction |
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| Diffraction |
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| Electrical power | power(W) = energy(J) / time(s) |
| Generating electricity | tidal solar wind biofuel geothermal hydroelectric nuclear |
| Electromagnetic spectrum | |
| Radio waves | Radio waves have lower frequencies and longer wavelengths than microwaves. They are used to transmit television and radio programmes. |
| Micro waves | Microwave radiation has lower frequencies and longer wavelengths than visible light. Microwaves with certain wavelengths are absorbed by water molecules and can be used for cooking. Also can transmit signals for mobile calls. |
| Infrared radiation | Infrared radiation is absorbed by the skin and we feel it as heat. It is used in heaters, toasters and grills. It is also used for television remote control |
| Visible light | light you can see |
| Ultraviolet radiation | Ultraviolet radiation is found naturally in sunlight. We cannot see or feel ultraviolet radiation, but our skin responds to it by turning darker. |
| X-rays | X-rays have a lower frequency than gamma radiation. Like gamma rays, they cannot be seen or felt. X-rays mostly pass through skin and soft tissue, but they do not easily pass through bone or metal. |
| Gamma rays | Gamma waves have a very high frequency. Gamma radiation cannot be seen or felt. It mostly passes through skin and soft tissue, but some of it is absorbed by cells. Gamma radiation is used to sterilise surgical instruments, to kill harmful bacteria in food, to kill cancer cells |
| States of matter | solid liquid gas |
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Solid can't flow fixed shape/volume dense |
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Liquid can flow fits shape of container fixed volume medium density |
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gas (image/jpg)
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Gas can flow fills container can change volume low density |
| Conduction | heated electrons are given kinetic energy which is passed on to other free electrons which move up the rod only metals have free electrons |
| Convection | cold particles are more dense > as they are heated they become less dense > rise > cool > become more dense >fall only happens in liquids and gases |
| Solar panels | matt black to absorb heat from the sun copper pipes to conduct heat |
| Specific heat capacity | |
| Law of conservation of energy | energy is not made or destroyed only changes from one form to another |
| Forms of energy | electrical light sound kinetic elastic potential gravitational potential heat nuclear chemical |
| Structure of the earth |
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earth-layers.GIF (image/GIF)
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| Lithosphere | made up of tectonic plates which lie on top of mantle because they are less dense |
| Gases in the atmosphere |
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air.gif (image/gif)
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