PSNB+1.2

toc =1.2 Convection Currents and the Mantle=

Vocabulary

 * Heat Transfer:** the movement of energy from a warmer object to a cooler object
 * Density:** The measure of the amount of mass there is in a volume of a substance
 * Radiation:** The transfer of energy through empty space
 * Conduction:** Heat transfer by direct contact through particles of matter
 * Convection:** Heat transfer by the movement of a heated fluid
 * Convection Currents:** The flow that transfers heat within a fluid

Outline

 * ===Summary===
 * Heat form core affects mantle using convection currents
 * Three heat transfers- Radiation, Conduction, and Convection
 * Convection Currents in Earth for more than 4 billion years
 * ===Radiation===
 * Heat Transfer through empty space
 * No direct contact
 * ===Conduction===
 * Direct contact of particles of matter
 * Heat goes to cold, not visa versa
 * ===Convection===
 * Movement of heat in a fluid
 * Convection currents
 * Gets heated, hot moves to top, goes to bottom, and then gets re-heated

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