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.

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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.

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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, which is why you can feel the heat from the sun even in space.

Front

How does the sun heat the Earth?

Back

The sun heats the Earth primarily through radiation, as sunlight travels through space and warms the surface.

Front

What happens when you touch a hot stove?

Back

You feel heat due to conduction, as the heat from the stove is transferred directly to your skin.

Front

What is an example of convection in everyday life?

Back

An example of convection is when you boil water in a pot; the hot water rises to the top while cooler water sinks, creating a circular motion.

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Why do you get sunburned?

Back

You get sunburned due to radiation from the sun, which can damage your skin cells.

Front

What is an example of conduction?

Back

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

Front

What is an example of radiation?

Back

An example of radiation is feeling warmth from a campfire or the sun without being in direct contact.

Front

How does a hair dryer work?

Back

A hair dryer uses convection to blow warm air onto your hair, helping it dry faster.