Conduction and Insulation

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

Front

What is insulation?

Back

Insulation is a material that reduces the transfer of heat, keeping warm air in and cold air out.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a material as its temperature rises, due to the increased kinetic energy of its particles.

Front

What happens to particles in a material when it is heated?

Back

The particles gain thermal energy, increasing their kinetic energy and causing them to move faster.

Front

What is contraction?

Back

Contraction is the decrease in volume of a material as its temperature decreases, due to the decreased kinetic energy of its particles.

Front

How does heat transfer occur between two objects?

Back

Heat transfers from the warmer object to the cooler object until they reach the same temperature.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when a metal spoon gets hot after being placed in a pot of boiling water.

Front

What is an example of insulation?

Back

An example of insulation is the foam used in walls to keep homes warm in winter.

Front

What is the role of a hand warmer?

Back

A hand warmer transfers heat to your hands through conduction, increasing the kinetic energy of the particles in your skin.

Front

What is the difference between conduction and convection?

Back

Conduction is heat transfer through direct contact, while convection is heat transfer through the movement of fluids (liquids or gases).