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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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magnitude of earthquake is measured by the HINT
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Richter scale
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HINT: Mr. Hoffman's first name is Richard.
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The point in Earth's interior where the energy release of an earthquake occurs is the __. HINT
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foucus
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The point in Earth's surface ABOVE where the energy release of an earthquake occurs is the __. HINT
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epicenter
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What are two names for a break in Earth's lithosphere where one block of rock moves toward, away from, or past another. HINT
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boundary, fault
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HINT: blame game
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Tectonic plates move because of... HINT: hot goes up, cool goes down, in a round and round direction HINT
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convection currents in the mantle(asthenosphere)
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A vast, underwater mountain chain is called a (n) _________. HINT
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ocean ridge
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HINT : Ruffles have>>>
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Earth has a layer that is plastic like material, which is slow flowing molten rock, which causes the tectonic plates to move. What is this layer called? HINT
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asthenosphere
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HINT: It is "soft" and very very hot!! HINT 2: it is where convection occurs.
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Scientists think the continents once formed a large, single landmass that broke apart, and the continents slowly drifted to their present locations. What is the name given to this hypothesis? HINT
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continental drift
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HINT: Ice Age
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What process forms an ocean basin? CHOICES:two crustal plates freezing,two crustal plates melting,two crustal plates colliding,two crustal plates moving apart HINT
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two crustal plates moving apart
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There is a process where the heat flow and movement of material within the Earth causes the plates on the surface to move. What is the name of this process? HINT
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convection
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HINT: It takes place in the as/thenosphere.
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Name 7 things that is caused by plate tectonics.
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mountains, earthquakes, volcanes, ocean basins, deep sea trenches, sea-floor spreading, rift valleys
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What kind of fault occurs where tectonic plates slide horizontally past each other
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transform
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Seafloor spreading occurs because ____.CHOICES new material is being added to the asthenosphere,earthquakes break apart the ocean floor,sediments accumulate at the area of spreadinG molten material beneath Earth's crust rises to the surface HINT
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molten material beneath Earth's crust rises to the surface
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The youngest rocks on the ocean floor are located _____. CHOICES:at mid-ocean ridges, far from mid-ocean ridges HINT
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at mid-ocean ridges
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HINT: its closest to where they were "born"
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The oldest rocks on the ocean floor are located _____. CHOICES at mid-ocean ridges, far from mid-ocean ridges HINT
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far from mid-ocean ridges
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HINT: its furthest from where they were "born".
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What is the range that plates move at? 1 to 12 cm per_______ HINT
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year
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HINT: What is the common unit for human age? HINT 2: choices (minute, day, year, decade)
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Active volcanoes are most likely to form at _____ boundaries. HINT
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convergent boundaries (subduction)
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HINT: Deep ocean trenches.
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Which is a way scientist have been able to study Earths interior?measuring earthquake waves as they travel through Earths surface, gathering samples from the liquid outer core,weighing rocks found near the outer core determining their densities,digging deep wells into Earths core HINT
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measuring earthquake waves as they travel through Earths surface
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HINT: the deepest we've been is 7 miles in the Earth's crust
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Why is the Theory of Plate Tectonics called a Theory and NOT a Law? HINT
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It Explains why the plates move.
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(Hint: what is the 3rd letter in Theory?)
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Another name for boundary. HINT
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fault
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Hint: Its NOT your ....
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