Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one through physical touch.

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 areas of a fluid rise and cooler, denser areas sink, 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, like the heat from the Sun reaching the Earth.

Front

How does heat transfer occur in a pot on a stove?

Back

Heat transfer occurs through conduction when the pot is placed directly on the stove, causing the pot to heat up.

Front

Why does the handle of a metal spoon warm up in hot soup?

Back

The handle warms up due to conduction, as heat is transferred from the hot soup to the metal spoon through direct contact.

Front

What is an example of heat transfer from the Sun?

Back

The heat transferred from the Sun to the Earth is an example of radiation.

Front

In which direction does heat flow when ice melts in water?

Back

Heat flows from the water to the icecap, causing the ice to melt.

Front

What is an example of convection in a house?

Back

Convection circulates warm and cool air in a house, helping to maintain a comfortable temperature.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, creating convection currents.

Front

What is the role of conduction in cooking?

Back

Conduction allows heat to transfer from the stove to the pot and then to the food being cooked.