Convection, Conduction and Radiation

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one, such as when a metal spoon heats up in a hot soup.

Tags

NGSS.MS-PS3-3

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circulation pattern.

Tags

NGSS.MS-ESS2-6

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves. It does not require a medium to travel through, which is why you can feel the warmth of the sun even in space.

Tags

NGSS.HS-PS4-3

Front

Give an example of conduction in everyday life.

Back

An example of conduction is when you touch a hot stove and feel the heat transfer to your hand.

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Give 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 to the bottom.

Tags

NGSS.MS-PS3-4

Front

Give an example of radiation in everyday life.

Back

An example of radiation is feeling the warmth of the sun on your skin or getting a sunburn at the beach.

Front

What happens to particles during conduction?

Back

During conduction, particles in a hotter object vibrate faster and transfer their energy to adjacent cooler particles through direct contact.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Front

What happens to particles during convection?

Back

During convection, warmer particles move up as they become less dense, while cooler particles move down, creating a cycle of movement.

Tags

NGSS.MS-PS1-4

Front

What is the role of density in convection?

Back

Density plays a crucial role in convection; warmer fluids are less dense and rise, while cooler fluids are denser and sink.

Front

How does radiation differ from conduction and convection?

Back

Radiation differs from conduction and convection because it does not require a medium; it can occur in a vacuum through electromagnetic waves.