Heat Transfer

Front

What is conduction?

Back

Conduction is the transfer of heat energy 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 areas of a liquid or gas rise and cooler areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat energy through electromagnetic waves. It does not require a medium, so it can occur in a vacuum.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat, preventing it from escaping into space and warming the planet.

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of energy that can travel through a vacuum and include visible light, infrared radiation, and ultraviolet radiation.

Front

How does the sun's energy reach the Earth?

Back

The sun's energy reaches the Earth through radiation, traveling through the vacuum of space.

Front

What is the role of carbon dioxide in the greenhouse effect?

Back

Carbon dioxide (CO2) traps heat in the atmosphere, contributing to the greenhouse effect and global warming.

Front

What is 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 boiling water.

Front

What is an example of convection in everyday life?

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

Front

What is an example of radiation in everyday life?

Back

An example of radiation is feeling the warmth of the sun on your skin without being in direct contact with it.