6th grade Science CCMS
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| The earth's crust and the very top of the mantle. | Lithosphere
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| The hotter, softer layer of rock on which the plates rest. | asthenosphere
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| Earth is broken into 10-12 giant slabs of rock. | tectonic plates
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| Alfred Wegener proposed a hypothesis which states that the continents are gradually moving apart and were once joined together. | continental drift
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| When crust is destroyed and one plate slides under the other. | subduction
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| Crust is neither created or destroyed along this type of boundry. | transform
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| New crust is formed along this type of boundry where magma pushes up and hardens between separating plates. | divergent
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| A fracture or break in earth's lithosphere, along which blocks of rock move past each other, this is where earthquakes begin. | fault
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| The shaking of the ground,a sudden release caused by stress in the lithosphere. | earthquake
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| The type of fault is when a block of rock above the moves down below the bottom rock, causing the blocks to separate. | normal
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| This type of fault is when the blocks of rock on either side of the fault scrape past each other horizontally. | strike slip
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| The point on the earth's surface above where rocks first start to move during an earthquake. | epicenter
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| The energy of an earthquake travels outward in all directions from the focus in ________ waves. | seismic
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| An instrument that constantly detects and records ground movement is called a ____________. | seismograph
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| Most earthquakes occur ____________________. | along tectonic plate boundaries.
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| The type of seismic waves that travel the fastest. | primary waves
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| This scale rates the amount of damage done by an earthquake in a specific location on a scale from I-XII. | Mercalli scale
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| This scale estimates an earthquake's magnitude on a scale of 1-10. | Richter
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| The type of seismic wave that travels the fastest. | primary
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| The type of wave that causes the ground to shake by making rock sway from side to side and roll like an ocean wave | surface
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| This technology can be used in tall buildings to reduce earthquake damage. | crossbars
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| An earthquake on the ocean floor can cause seismic sea waves called _______________ | tsunamis
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| Most of the world's active volcanoes are located in the "Ring of Fire" around this plate. | Pacific Plate
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| This type of volcano has violent explosions of rock, ash and cinders that are followed by slower oozing of lava, making it steep at the top and gently sloping at the bottom. | composite
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| The Hawaiian Islands were formed over _________ where heated rock rises in plumes, or thin columns from the mantle. The Pacific Plate carries each volcano away from the area causing new islands to form. | hot spots
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Created by:
sgerhardt
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