Science Ch 1 Les 4 - Heat Energy Flashcard (SAVVAS)

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer parts of a fluid rise and cooler parts sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, such as air or water.

Front

What is an insulator?

Back

An insulator is a material that does not conduct heat well. It slows down the transfer of heat.

Front

What is an example of a good insulator?

Back

A towel is a good insulator because it traps heat and keeps things warm.

Front

What is heat flow?

Back

Heat flow is the movement of heat from one object to another, typically from warmer objects to cooler objects.

Front

What are convection currents?

Back

Convection currents are the circular movements of fluids caused by the rising of warm fluid and the sinking of cooler fluid.

Front

How do two objects create heat when they rub against each other?

Back

When two objects rub against each other, friction occurs, which generates heat.

Front

What happens to heat when it flows from a warmer object to a cooler object?

Back

The warmer object loses heat, and the cooler object gains heat until they reach thermal equilibrium.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects reach the same temperature and no heat flows between them.