5 a day revision Heat transfer

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»Heat Transfer describes the exchange of thermal energy…

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Presentation transcript:

5 a day revision Heat transfer What is the unit for measuring heat? A string vest contains lots of holes. How do the holes keep the wearer warm? Why does convection only happen in liquids and gases? Explain why metals feel colder than non-metals when they are at the same temperature. Heat is lost in many ways from a house. Suggest some ways that you could minimise those losses. @aegilopoides

5 a day revision Heat transfer Explain what is meant by insulation. Why do materials expand when heated? Explain what is meant by insulation. Heat energy from the Sun is essential for life on Earth. Explain why there must be another method of heat transfer other than conduction and convection. What factors affect the amount of heat energy stored in something? The person in the picture is drinking a cold drink. Describe the heat transfers that are taking place. @aegilopoides