Heat Transfer

Front

What is heat transfer?

Back

The process of thermal energy moving from one object or substance to another.

Front

What are the three main types of heat transfer?

Back

Conduction, convection, and radiation.

Front

Define conduction in the context of heat transfer.

Back

The transfer of heat between solids through direct contact.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids or gases) due to differences in temperature and density.

Front

Explain radiation as a method of heat transfer.

Back

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

Front

How does a spoon get hot when stirring hot coffee?

Back

Through conduction, as heat is transferred from the hot coffee to the spoon.

Front

What happens to air when it is heated?

Back

It becomes less dense and rises, leading to convection currents.

Front

What type of heat transfer occurs when baking a cake?

Back

Convection, as hot air circulates around the cake in the oven.

Front

What is the role of density in convection?

Back

Less dense (warmer) fluids rise while denser (cooler) fluids sink, creating a convection current.

Front

Give an example of radiation in everyday life.

Back

The warmth felt from sunlight or a campfire.