Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warm fluid rises while cooler fluid sinks, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through space.

Front

Give an example of conduction.

Back

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

Front

Give an example of convection.

Back

An example of convection is the warm air rising near a heater, causing cooler air to move in and create a circulation of air.

Front

Give an example of radiation.

Back

An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.

Front

How does the sun transfer heat to the Earth?

Back

The sun transfers heat to the Earth through radiation, using electromagnetic waves.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, leading to convection currents.

Front

What is the main difference between conduction and convection?

Back

The main difference is that conduction requires direct contact between materials, while convection involves the movement of fluids.

Front

What is an example of heat transfer in cooking?

Back

An example is boiling water in a pot, where heat is transferred from the stove to the pot (conduction) and then to the water (convection).