Heat transfer

Front

What is conduction?

Back

Conduction is the transfer of heat through a solid material without the 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 or gases) caused by the movement of the fluid itself. Warmer, less dense fluid rises while cooler, denser fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation. It does not require a medium and can occur in a vacuum.

Front

Example of conduction in everyday life?

Back

Stirring a hot soup with a metal spoon, where heat is transferred from the soup to the spoon.

Front

Example of convection in everyday life?

Back

Boiling water in a pot, where hot water rises to the top and cooler water sinks.

Front

Example of radiation in everyday life?

Back

Feeling warmth from the sun on your skin or heat from a lamp.

Front

What happens to the temperature of a solid object when it conducts heat?

Back

The temperature of the solid object increases as it absorbs heat from a hotter object.

Front

What is the role of density in convection?

Back

In convection, warmer fluids are less dense and rise, while cooler fluids are denser and sink, creating a circulation pattern.

Front

How does heat transfer from the sun to the Earth?

Back

Heat transfer from the sun to the Earth occurs through radiation.

Front

What is an insulator?

Back

An insulator is a material that does not conduct heat well, such as wood or plastic, and is used to reduce heat transfer.