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, such as infrared radiation, and does not require a medium.

Front

How does convection work in a swimming pool?

Back

In a swimming pool, warm water near the surface rises, creating a circulation pattern as cooler water moves down to take its place.

Front

What role does conduction play in cooking?

Back

Conduction allows heat to transfer from a hot cooking surface to the food in direct contact with it, cooking the food.

Front

Give an example of radiation in everyday life.

Back

An example of radiation is feeling the warmth of the sun on your skin, which is heat transferred through electromagnetic waves.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, while cooler, denser air sinks, creating convection currents.

Front

How does a curling iron use conduction?

Back

A curling iron uses conduction to transfer heat from its heated surface to the hair, curling it.