Convection, Conduction, Radiation Practice

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur through empty space.

Front

How does heat transfer occur?

Back

Heat transfers from an area of high temperature to an area of low temperature.

Front

Give an example of convection.

Back

An example of convection is the warm air rising in the atmosphere or the movement of water in a boiling pot.

Front

Give an example of conduction.

Back

An example of conduction is touching a hot metal object, where heat transfers from the metal to your hand.

Front

Give an example of radiation.

Back

An example of radiation is the Sun heating the Earth.

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 density in convection?

Back

In convection, less dense (warmer) fluids rise while denser (cooler) fluids sink, creating a cycle of movement.

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object, related to its temperature.