P1.1.1 Infrared Radiation + P1.1.2 Surfaces and Radiation + P1.1.3 States of Matter 4.5 / 5 based on 2 ratings ? PhysicsEnergy transfer by heatingGCSEAQA Created by: MaddiCreated on: 18-04-14 19:19 What surfaces are the best emiters of infrared radiation? Dark, matt surfaces emit more infrared radiation than light, shiny surfaces. 1 of 10 What surfaces are the best absorbers of infrared radiation? Dark, matt surfaces absorb more infrared radiation than light, shiny surfaces. 2 of 10 What surfaces are the best reflectors of infrared radiation? Light, shiny surfaces reflect more infrared radiation than dark matt surfaces. 3 of 10 How are the particles in solids arranged? The particles in a slid are held next to each other in fixed positions. They vibrate about their fixed positions so the solid keeps its own shape. 4 of 10 How are the particles in liquids arranged? The particles in a liquid are in contact with each other. They move about at random. So a liquid doesn't have its own shape and it can flow. 5 of 10 How are the particles in gases arranged? The particles in a gas move about at random much faster. They are much further apart from each other than in a liquid. 6 of 10 Why is a gas much less dense than a solid or a liquid? The particles in a gas move about randomly and are much further apart than particles in a solid or liquid. 7 of 10 Do all objects give off infrared radiation? All objects give off infrared radiation 8 of 10 How does infrared radiation depend on the temperature of the object? The hotter an object, the more infrared radiation it emits in a given time. 9 of 10 What makes an object emit/ absorb infrared radiation faster? If there is a bigger difference in temperature between the object and its surroundings. 10 of 10
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