P1 - Heat Radiation 0.0 / 5 ? PhysicsAstronomyGCSEOCR Created by: RachelcfxCreated on: 10-05-16 18:58 What is radiation? How we get heat from the sun. 1 of 5 Heat is radiated as infrared waves - what are infrared waves? Electromagnetic waves that travel in STRAIGHT LINES at the speed of light. 2 of 5 How is radiation different from conduction and convection? Doesn't need a material to travel through, can only occur through transparent substances, amount of radiation depends on surface colour/area. 3 of 5 What in life in heat radiation important in? Cooking. 4 of 5 The heat radiated by a grill... Is absorbed by the surface particles of the food, increasing kinetic energy. 5 of 5
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