Conduction, Convection, and Radiation Flashcard

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones, transferring energy.

Front

What is convection?

Back

Convection is the transfer of heat 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.

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

Example of conduction in everyday life?

Back

Holding a hot cup of coffee warms your hands through conduction.

Front

Example of convection in everyday life?

Back

Ocean currents are caused by convection, where warm water rises and cool water sinks.

Front

Example of radiation in everyday life?

Back

A microwave cooks food using radiation to heat it.

Front

How does heat transfer occur in solids?

Back

In solids, heat transfer occurs mainly through conduction as particles are closely packed and can easily collide.

Front

How does heat transfer occur in fluids?

Back

In fluids, heat transfer occurs through convection, as the movement of the fluid allows for the transfer of heat.

Front

What is the role of density in convection?

Back

Density affects convection; warmer fluids are less dense and rise, while cooler fluids are denser and sink, creating a convection current.

Front

What is an example of radiation from the sun?

Back

The heat we feel from sunlight is an example of radiation, as it travels through space to warm the Earth.