Flashcards
Physics 1
Cards in this deck (23)
- 1Infrared Radiation What does this involve? What features control the amount of radiation? What do dark matt surfaces do better than light shiny surfaces?- transfer of heat energy also called thermal radiation. No particles are involved.
- surface, shape and dimensions
- emit more radiation; absorb more radiation - 2Kinetic theory what happens when the temp of a gas increases? what happens when the temp of a gas decreases?- the molecules move faster; collisions become more intense
- the molecules move more slowly; they become closer together; the collisions are less frequent; the gas becomes a liquid. - 3Energy transfer by heating In what ways can the energy transfer happen?conduction
convection
condensation
evaporation - 4Conduction How does it take place?As a metal becomes hotter the atoms vibrate more vigorously
the additional energy is transferred to the cooler parts by the movement of the free electron. - 5Convection How does it happen?1. Particles in a liquid or gas nearest the energy move faster causing the substance to expand and become less dense
2. Warm liquid or gas now rises, as it does it cools becoming denser and then sinks
3. The cool, dense liquid then gets heated by the energy source, thus creating a convection current. - 6Evaporation and Condensation How does it happen?- the atoms in a liquid are heated, moving more quickly, they escape and become a gas.
condensation is opposite to evaporation. - 7Rate of energy transfer what factors effect the rate?the surface area and volume
the type of material
the nature of surface
its temperature - 8Heating and Insulating Homes What is a u-value? what can be used to heat homes?- a measure of how effective a material is a insulator.
-solar panels. - 9Specific heat capacity what is this? what is the equation?- the amount of energy required to change the temp of 1kg of material by 1c.
- E = m x c x 0 - 10Energy transfer how can we show the useful and waste energy?With a sankey diagram
- 11Efficiency What does it tell us?- how cost effective the device is.
- 12Transferring electrical energy How is electrical energy transferred? What effects the amount of transfer?- by heaters to heat surroundings; into light energy; sound energy; kinetic energy.
- how long the appliance is on for; how fast the appliance transfers. - 13Generating Electricity what are some energy sources?- fossil fuels, nuclear fuels, biofuels
- 14Non-renewable energy What are the sources?- Nuclear, coal, oil and gas
- 15Renewable energy What are the sources?- Wind turbines, tidal and waves, hydroelectric, solar cells (panels), biofuels and geothermal
- 16Carbon capture What is it?- the storage of c02 to reduce its effect on the atmosphere
- 17the national grid What is it?
- 18Waves What are the two types?- Transverse
longitudinal - 19Electromagnetic spectrum What has the shortest wavelength? what has the longest? What is it?- Gamma rays
- Radio waves
- 20Reflection Where is the normal line? what forms can the image take?- perpendicular to the mirror
- virtual (opposite side of mirror)
upright (the same orientation)
the same size
laterally inverted (left becomes right) - 21Sound What wave is used? what is it measured in? what is determined by the frequency?- longitudinal waves
- hertz
- pitch - 22Red-Shift What changes (Doppler effect)? What happens with light?- the wavelength and frequency
- when the light moves away, the wavelength increases and freq deceases. - 23The big bang What is the theory? what supports the theory?- the universe is expanding
it began very small then a huge explosion (big bang)
- cosmic microwave background radiation (CMBR)
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- GCSE Physics Flashcards on Physics 1 , created by Ellie Yetta Fost on 30/10/2015.
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- Ellie Yetta Fost
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