Conduction, Convection, Radiation

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 convection?

Back

Convection is the transfer of thermal energy in a fluid (liquid or gas) by the movement of warm and cool fluids.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as light or infrared radiation, without the need for a medium.

Front

What are conductors?

Back

Conductors are materials that allow heat to flow through them easily, such as metals.

Front

What are insulators?

Back

Insulators are materials that do not allow heat to flow through them easily, such as rubber or wood.

Front

How does a dog laying next to a wood stove demonstrate radiation?

Back

The dog receives heat from the stove through radiation, as the heat travels through the air in waves.

Front

How does a lizard stay warm under a lamp?

Back

The heat from the lamp warms the lizard through radiation, allowing it to absorb heat without direct contact.

Front

What is an example of convection in everyday life?

Back

An example of convection is the way warm air rises and cool air sinks in a room, creating a circulation of air.

Front

Why are metals considered good conductors?

Back

Metals have free electrons that can move easily, allowing them to transfer heat quickly.

Front

What happens to the temperature of a fluid when it is heated?

Back

When a fluid is heated, it becomes less dense and rises, while cooler, denser fluid sinks, creating convection currents.