Heat Transfer Flashcards
What do energy transfer diagrams show?
The energy transfers in a process. More efficient devices transfer the energy supplied to them in a greater proportion of useful energy than less efficient devices do
What is heat?
Heat is thermal energy
How can heat energy move through a substance?
Conduction
What is a good conductor of heat?
Metal
What are poor conductors of heat?
Non-metals and gases
What are poor conductors of heat called?
Insulators
How is heat energy conducted?
Heat energy is conducted from the hot end of an object to the cold end
What are liquids and gases?
Fluids. The particles in these fluids can move from place to place.
When does convection occur?
Convection occurs when the particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy.
What happens to liquids and gases when they are heated?
They expand
Why do liquids and gases expand when they are heated?
The particles in liquids and gases move faster when they are heated than they do when they are cold. As a result, the particles take up move volume.
What is thermal radiation also known as?
Infrared radiation
Most Kids Hate Learning GCSE Energy Names. Each capital letter is the first letter in the name of a type of energy. What are they?
Magnetic - Energy in the magnets and electromagnets.
Kinetic - The energy in moving objects. Also called movement energy.
Heat - Also called thermal energy.
Light - Also called radiant energy.
Gravitational Potential - Stored energy in raised objects.
Chemical - Stored energy in fuel, foods and batteries.
Sound - Energy released by vibrating objects.
Electrical - Energy in moving or static electric charges
Elastic Potential - Stored energy in stretched or squashed objects.
Nuclear - Stored in the nuclei.
How can heat be transferred from place to place?
By conduction, convection and radiation
What does an energy transfer diagram show?
Each type of energy, whether it’s stored or not, and the processes taking place as it’s transferred
