Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one through molecular collisions.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases). It occurs when warmer, less dense areas of a fluid rise and cooler, denser areas sink, 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 empty space.

Front

Give an 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

Give an example of convection in everyday life.

Back

An example of convection is the way warm air rises and cool air sinks in a room, creating a circulation of air.

Front

Give an example of radiation in everyday life.

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 conduction occur in solids?

Back

In solids, conduction occurs as heat energy is transferred from one molecule to another through direct contact, causing the molecules to vibrate and pass on their energy.

Front

How does convection occur in liquids?

Back

In liquids, convection occurs when heated liquid becomes less dense and rises, while cooler liquid sinks, creating a continuous flow.

Front

What is the primary way heat travels through gases?

Back

The primary way heat travels through gases is by convection, as warmer gas rises and cooler gas sinks.

Front

What happens to a car's interior temperature on a sunny day?

Back

A car’s inside temperature can rise to over 100 degrees due to radiation from the sun heating the surfaces inside the car.