Decomposition Reactions 1. Place approximately half a spatula full (roughly pea-sized) of copper(II) carbonate in a dry test tube. If you do not have a clean, dry test tube, ask your instructor for one. Do not try to dry a test tube during the laboratory period.
What Is the Asthenosphere? The asthenosphere is part of the upper mantle located below the crust of the earth. The asthenosphere boundary is primarily defined by temperature, and it starts when the crust heats up to 1300Â° C. At this temperature the crust begins to melt and move more as a liquid. The asthenosphere is important in plate tectonics, as convection currents slowly move the tectonic plates that lie above.
asthenosphere-the soft, flexible upper layer of the mantle, on which the tectonic plates move. continental drift-the theory that all of Earth's continents were once joined together into a single large landmass, and then moved apart, forming the continents we see today. convection-transfer of heat by movement of a fluid.ondwana-the southern continent formed when Pangaea split into two pieces. Laurasia-the northern continent formed when Pangaea split into two pieces. lithosphere-the rigid, brittle layer made up of the crust and the uppermost part of the mantle. It is broken up into pieces called tectonic plates.