Those processes that are driven by solar radiation. Prior to the differentiation, U, Th, K, uniformly distributed D. Because of chemical affinities, U, Th, K were concentrated in crust. The energy of the motion of atoms 1. The heat energy that flows out of the Earth at some measured point. Convection a. transfer of heat by transfer of heated matter.
Matter moves from hot region to cold density gradient.
But Solar energy striking the Earth is 5000x that of heat flow 2. Temperature in the Earth A. Geothermal gradients 1. Geothermal Energy A. Using heat from near surface rocks to turn turbines B. High heat flow region 1. Salton Trough 3. Geysers region C. Occurs usually in areas of declining volcanic activity D. Principals 1.