THEY+1.2

toc

=1.2 Convection Currents & Mantle=

Vocabulary

 * Heat Transfer** : movement of energy from a warmer object to a cooler object (three types of heat transfer radiation, conduction, convection)
 * Radiation:** transfer of energy through empty space
 * Conduction:** transfer by direct contact of particles
 * Convection:** transfer by the movement of a heated fluid
 * Density:** a measure of how much mass there is in a volume of a substance
 * Convection Currents:** flow that transfers heat with a fluid

Radiation

 * the transfer of energy through hollow space is radiation
 * heat transfer by radiation with no contact

Conduction

 * heat is the transfer through a heated object to an unheated object
 * particles near the bottom of the spoon vibrates faster as it is heated

Convection

 * this is the heat transfer of the movement of a heated fluid
 * heat transfer by convection is differenced with tempurature and density

Convection in Earth's Mantle

 * the heat source for the currents flow in the athenosphere
 * hot columns of the mantle material slowly rise through the athenosphere