ENERGY AND HEAT TRANSFER

​Heat is a type of energy.

• Heat flows from hot objects to cold objects.

• Temperature tells us how hot or cold something is.

​There are three ways heat energy can be transferred:

• Conduction

• Convection

• Radiation

• Heat travels through particles by vibration.

• Metals are good conductors of heat.

• Warm fluids rise; cool fluids sink.

• This creates a convection current.

• It does not need particles.

• Heat from the Sun reaches Earth by radiation.

• Conduction: Frying pan heating food

• Convection: Hot air rising from a radiator

• Radiation: Feeling heat from a fire

• Give one example.

• True or False: Heat can travel through empty space.