EAS EXAM 1 Questions & Answers(RATED A+)

CHP 2.1: What is the difference between "heat" and "temperature" - ANSWERheat is the vibrational motion of particles & a form of energy temperature is the measure of said energy CHP 2.9: What are the four main sources of Earth's internal terrestrial heat energy? Which on is the most important? - ANSWERradioactive decay of uranium and potassium energy released from core formation distortion of tidal waves accretionary heat: transfer of kinetic energy of objects striking the proto-planet surface CHP 2.10: What is the geothermal gradient? Why is it different under the continents than under the oceans? - ANSWERincreasing in temperature as depth increases because earth interior is hotter than the exterior. It is different under the ocean because the lithosphere/ crust is thinner there, so heat flows faster to the ocean floor. CHP 2.11: How does heat move to the surface from inside the planet? - ANSWER- Lithosphere is rigid out heat from geothermal gradient is from conduction - Deeper part of the mantle heat is from convection because it's liquid. Convection is faster than conduction - radiation minimal heat from this to the surface because most of the radioactive energy is blocked by rocks CHP 2.12: How is it possible that solid rock deep inside Earth can undergo convection, and what are the results of that convection? - ANSWERThe mantle is less rigid rocks become like plastic because of high temperatures. More movement means more convection Effects: plate tectonics and efficient heat transfer.