Conduction, Convection, Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat from one object to another through direct contact.

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 radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

Front

Give an example of conduction in everyday life.

Back

An egg cooking in a frying pan is a common example of conduction.

Front

How does warm air behave in a room?

Back

Warm air rises because it is less dense than cooler air, demonstrating convection.

Front

What is the direction of heat flow in heat transfer?

Back

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

Front

What is the primary mechanism of heat transfer in liquids and gases?

Back

Convection is the primary mechanism of heat transfer in liquids and gases.

Front

What type of heat transfer occurs when you feel warmth from the sun?

Back

The warmth felt from the sun is an example of radiation.

Front

What is an example of convection in nature?

Back

Ocean currents are an example of convection, where warm water rises and cooler water sinks.

Front

What is the role of thermal conductivity in conduction?

Back

Thermal conductivity is a measure of how well a material conducts heat; materials with high thermal conductivity transfer heat more efficiently.