Heat Transfer

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What are the three main types of heat transfer?

Back

The three main types of heat transfer are conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

Define convection.

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

Front

Example of conduction in everyday life?

Back

An example of conduction is when a metal spoon gets hot after being placed in a pot of hot soup.

Front

Example of convection in everyday life?

Back

An example of convection is the warm air rising from a heater and circulating around a room.

Front

Example of radiation in everyday life?

Back

An example of radiation is feeling the warmth of the sun on your skin.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, causing cooler air to move in and take its place.

Front

How does a heat lamp keep food warm?

Back

A heat lamp keeps food warm by using radiation to transfer heat directly to the food.