Heat transfer

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). It occurs when warmer parts of a fluid rise and cooler parts 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

How does heat transfer occur when you hold an ice cube?

Back

Heat transfer occurs through conduction, as the heat from your hand melts the ice cube.

Front

What happens when you iron a wrinkled shirt?

Back

Heat is transferred through conduction from the iron to the fabric, smoothing out the wrinkles.

Front

What is the direction of heat flow?

Back

Heat always moves from warmer to cooler areas.

Front

How do you feel warmth from a fire?

Back

You feel warmth from a fire through radiation, as the heat travels through the air to reach you.

Front

What is an example of convection in everyday life?

Back

An example of convection is when boiling water; the hot water rises to the top while cooler water sinks.

Front

What is the role of the sun in heat transfer?

Back

The sun transfers heat to the Earth through radiation, warming the planet.

Front

What is an example of conduction in action?

Back

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