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Criado por khalsagirl16
mais de 10 anos atrás
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Questão | Responda |
Heat | Measure of energy |
Temperature | measure of hotness of a body on an arbitrary scale |
Specific Heat Capacity (SHC) | the amount of energy needed to raise the temperature of 1 kg of substance by 1 degree Celcius |
Specific Latent Heat SHL | the amount of energy needed to change the state of a substance without changing its temperature |
Conduction of Heat | process where vibrating particles pass on extra kinetic energy to neighbouring particles |
Convection | when more energetic particles move from the hotter region to the cooler region and take their heat energy with them |
Radiation | thermal energy transfer which occurs when something hotter than its surroundings radiates heat from its surface |
Ways to save energy... | Loft Insulation, Cavity Walls and insulation, Draught-proofing, Thick curtains, Double glazing, hot water tank jacket |
Efficiency | ratio of useful energy output to total energy input. also expressed as a % |
Amplitude | displacement from the rest position to the crest |
Wavelength | length of the full cycle of wave - from crest to crest |
Little diffraction is when... | gap is much wider than wavelength |
Diffraction | the spreading of a wave when it passes through a gap or around an edge |
Refraction | change in speed & usually direction, when light passes through from one medium to another: air to water |
S wave travel through... | solids only |
P waves travel.... | through solids and liquids |
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