Conduction, Convection, Radiation

Front

What is the primary method of heat transfer used by microwaves?

Back

Radiation

Front

Define conduction in the context of heat transfer.

Back

Conduction is the transfer of heat from objects that are touching.

Front

What is convection?

Back

Convection is the process where a hot liquid or air expands, becomes less dense, and rises, or becomes more dense and sinks.

Front

Provide an example of convection in everyday life.

Back

An example of convection is when making soup, where the water rises and lowers.

Front

Why does the handle of a metal spoon warm up when placed in a hot bowl of soup?

Back

The handle warms up due to conduction.

Front

What are the three main methods of heat transfer?

Back

Conduction, convection, and radiation.

Front

How does conduction occur at the molecular level?

Back

Conduction occurs when molecules collide and transfer kinetic energy to neighboring molecules.

Front

What role does density play in convection currents?

Back

In convection currents, less dense (hotter) fluids rise while more dense (cooler) fluids sink.

Front

What is an example of radiation in everyday life?

Back

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

Front

How does convection differ from conduction?

Back

Conduction requires direct contact between materials, while convection involves the movement of fluids.