36What process is shown below? Remember: Pay attention to the direction of the arrows!
37Subduction: Where a dense plate dives under a less dense plate is a subduction zone. Rock can be “recycled” as it melts back into magma. Volcanoes may form & erupt here.
38What causes the mantle rock to flow very slowly?
39Convection CurrentsCycles of slowly flowing melted rock are created as heat is transferred in the mantle.
40When the earthquake happened near Japan, it was reported as a 9 When the earthquake happened near Japan, it was reported as a 9.0 on the Richter Scale. What does this number tell us about the earthquake?a. How much the repairs will cost b. The time of day the quake occurred c. The size/magnitude of the quake d. How long the quake lasted
42The Indian Ocean earthquake off the coast of Sumatra had damage reports from people in particular locations. These reports were given as ROMAN NUMERALS with descriptions. What do we call this scale that is used to report damage?Richter ScaleMercalli ScaleGeiger Scale
43b. Mercalli Scale(Remember our ‘Locating the Epicenter’ Radio Activity…)
44True or False? Volcanoes may form at transform boundaries.
45FalseVolcanoes may form when plates converge or diverge.
46A weak spot in Earth’s crust where magma comes to the surface is called a ___.
56Which volcano is described below. 1. A wide gently sloping mountain 2 Which volcano is described below? 1. A wide gently sloping mountain 2. A tall cone-shaped mountain with explosive eruptions 3. A cone-shaped mountain that erupts ash, cinders & bombs
62Can you describe what happens with convection currents in Earth’s mantle?
63Look at this diagram. I have some questions for you…
64Looking @ the arrows… Which type of boundary is at letter X? What is happening at letter X?What would form at letter X?Which type of boundary is at letter Z?What is happening at letter Z?What could form at letter C?