KHKZ+1.2

toc =Convection currents in the mantle=
 * 1.2**

**Vocabulary**

 * Heat Transfer**- movement of energy from a warmer object to a cooler object.
 * Radiation**- energy transfer through empty space.
 * Conduction**- heat transfer by direct contact or matter.
 * Convection**- heat transfer by movement of a heated fluid
 * Density**- how much mass in a volume of a substance.
 * Convection Current**- flow which transfers heat within a fluid.

Radiation

 * heat transfer to empty space
 * i.e the warmth from an open fire

Conduction

 * solid meeting a liquid

Convection

 * convection current
 * flow that transfers heat within a fluid

Convection in the Earth's Mantle

 * Earth's mantle responds to heat