Conduction, Convection, Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a solid material without any movement of the material itself. It occurs when two objects at different temperatures are in direct contact.

Front

What is convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself. Hot fluid rises while cooler fluid sinks, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as light. It does not require a medium to travel through, allowing heat to be transferred through empty space.

Front

In heat transfer, heat always flows from which substance to which substance?

Back

Heat always flows from the hotter substance to the colder substance.

Front

What is an example of conduction?

Back

An example of conduction is when a metal spoon gets hot after being stirred in a hot cup of coffee.

Front

What is an example of convection?

Back

An example of convection is the warm air rising from a heater, causing cooler air to move in and create a circulation of warm air in a room.

Front

What is an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin while standing outside.

Front

How does radiation cause sunburn?

Back

Sunburn occurs due to radiation from the sun, specifically ultraviolet (UV) rays that can damage the skin.

Front

What happens to the temperature of a substance when it absorbs heat?

Back

When a substance absorbs heat, its temperature increases.

Front

What happens to the temperature of a substance when it loses heat?

Back

When a substance loses heat, its temperature decreases.