Heat Transfer

Front

How is energy from the Sun transferred?

Back

by radiation

Front

Cold water has ______________ density than warm water.

Back

more

Front

When you heat up an object, the particles in the object move _________.

Back

faster

Front

Which of these combines with changes in a fluid's density and the force of gravity to set convection currents in motion?

Back

heating and cooling of a fluid

Front

When you touch hot sand, heat is transferred by _________ to your skin.

Back

conduction

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids and gases).

Front

What is radiation?

Back

The transfer of energy through electromagnetic waves, such as light.

Front

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

Back

It decreases.

Front

What is a convection current?

Back

A circular movement of fluid caused by the rising of heated fluid and the sinking of cooler fluid.