Mttc Integrated Science (Earth And Space Sciences) Elaborated Questions And Answers

Mttc Integrated Science (Earth And Space Sciences) Elaborated Questions And Answers Theory of Plate Tectonics - CORRECT ANSWER-A theory stating that Earth's lithosphere is broken into huge plates that move and change in size over time - explains the process of continental drift - theory is a fusion on the theories of continental drift and seafloor spreading - continents are not floating on the ocean, rather they are rooted What are the 10 major plates of the Earth's lithosphere? - CORRECT ANSWER-African, Antarctic, Australian, Eurasian, North American, South American, Pacific, Cocos, Nazca, and Indian. What are the two main sources of tectonic plate motion? - CORRECT ANSWER-gravity and friction What is the source of energy for tectonic plate motion? - CORRECT ANSWER-the dissipation of heat from the mantle in the (relatively weak) asthenosphere ridge push - CORRECT ANSWER-when the force of gravity moves a plate downward and away from a ridge slab pull - CORRECT ANSWER-a mechanism that contributes to plate motion in which cool, dense oceanic crust sinks into the mantle and "pulls" the trailing lithosphere along mantle drag - CORRECT ANSWER-plates move due to the friction between the lithosphere and the asthenosphere trench suction - CORRECT ANSWER-involves a downward frictional pull on oceanic plates in subduction zones due to convection currents convergent plate boundary - CORRECT ANSWER-when adjacent plates move toward one another and one plate slips underneath another. three types of formations can come of this 1) oceanic plate + oceanic plate = deep trench 2) continental plate + continental plate = mountain 3) continental plate + oceanic plate = ocean goes under continent, mountains on one side, oceanic trench on the other subduction zone - CORRECT ANSWER-the region where an oceanic plate sinks down into the asthenosphere at a convergent boundary, usually between continental and oceanic plates