reforming the earth plate tectonics boundaries earthquakes volcanoes random 100 200 300 400 500
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Reforming the Earth
Plate Tectonics
Boundaries Earthquakes Volcanoes Random
100 100 100 100 100
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300 300 300 300 300
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500 500 500 500 500
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Solid, outer layer consisting of the crust and upper mantle
Answer
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Lithosphere
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Answer
This type of crust has a low density made of silica rich rock
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Continental crust
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Layer of plastic rock below the lithosphere
Answer
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Asthenosphere
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Dense crust made of iron and magnesium
Answer
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Oceanic crust
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What forms when oceanic lithosphere subducts
beneath oceanic lithosphere?
Answer
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An Island Arc
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What is an undersea mountain range formed at a divergent boundary?
Answer
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Mid-ocean Ridge
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What kind of boundary would from a mountain
range?
Answer
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Convergent
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Boundary where 2 plates are moving
away from each other
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Divergent
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Where are most divergent boundaries found?
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On the ocean floor
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The San Andreas Fault is an example of this type of boundary
Answer
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.
Transform
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What are 2 types of surface waves?
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Love and Rayleigh
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Answer
What is an area where no direct seismic waves can Be detected?
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Shadow Zone
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What scale do we use to describe the intensity of an
earthquake?
Answer
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Modified Mercalli
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What is it called when rocks on each side of a
fault suddenly return to their undeformed shape?
Answer
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Elastic Rebound
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What are the most damaging seismic waves?
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Surface Waves
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Answer
When this molten rock solidifies beneath Earth’s surface, intrusive igneous
rock forms
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Magma
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Magma that erupts onto Earth’s surface is called
what?
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Lava
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Volcanically active area of Earth’s
surface commonly far away from a tectonic
plate
Answer
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Hot Spot
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This forms in the ocean where one plate is
subducted
Answer
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Trench
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Answer
Magma formed from an underwater volcano is called what?
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Pillow Lava
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What is the supercontinent that formed 300 million
years ago?
Answer
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Pangea
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What scales do we use to measure the magnitude of an
earthquake?
Answer
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Richter and Moment Magnitude
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The point on Earth’s surface directly above the focus of an
earthquake
Answer
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Epicenter
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A large pluton that can cover an area as big as 100 km2 is a
_________
Answer
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Batholith
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Devils Tower was caused by the cooling of magma within Earth’s crust until erosion
revealed it. What is this structure called?
Answer
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A Pluton
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