1) Which of the following DOES NOT describe a convection process? a) the handle of a metal pot is hot while cooking b) boiling of macaroni pasta c) a sea breeze d) ocean water in the surface is warmer 2) What is the source of heat generated by the core to the mantle? a) gases b) decayed radioactive elements c) molten rocks d) molten metals 3) Which of the following has a faster movement of molecules? a) hot materials b) warm materials c) cold materials d) room temperature materials 4) Which of the following has a lesser density in a convection cell? a) warm fluid materials b) cold fluid materials c) room temperature fluid materials d) hot fluid materials 5) In a convection current, hot materials move a) any direction b) sideward c) upward d) downward 6) The uplifting and tearing apart of lithosphere occurs at a) convergent boundary b) divergent boundary c) transform fault boundary d) mantle 7) The idea that Earth’s lithosphere is broken up into separate plates that float on the mantle is the theory of a) continental drift b) seafloor c) tectonic movement spreading d) plate tectonics 8) The region in which one plate moves under another is a) rift valley b) subduction zone c) magma chamber d) vent 9) A driving force for plate motion at mid-ocean ridges as a result of the rigid lithosphere sliding down a) slab pull b) ridge push c) convection current d) seafloor spreading 10) The motion of gas or liquid caused by differences in temperature is a a) tectonic movement b) plate tectonic c) convection current d) magma chamber

J.hernandez

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