Conduction Convection Radiation

Front

When molecules are heated, what happens to them?

Back

They speed up, become less dense, and rise

Front

When energy increases, the speed of molecules ______.

Back

Increases

Front

In which direction does heat move?

Back

From warmer to cooler

Front

What happens to warmed molecules after they rise to the top?

Back

They cool down, become more dense, and sink

Front

What is conduction?

Back

The transfer of heat through direct contact

Front

Objects that easily transfer heat (metals are good at this)

Back

Conductors

Front

What is convection?

Back

Transfer of heat in a fluid through currents

Front

As fluids are ______, they become _____ dense and rise.

Back

Heated; less

Front

Lava lamps work because of what type of heat transfer?

Back

Convection

Front

What does the rate of heat transfer depend on?

Back

the difference in temperature of the two objects