Stack #132669
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Continental Drift | the hypotesis that continents have moved slowlyto their current locations
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| Pangea | the large landmass that consisted of all the continents connected
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| Seafloor Spreading | 1) hot less dense material below Earth's crust rises upward to the surface at the mid-ocean ridges 2) then it flows sideways carrying the seafloor away from the ridge 3) as the seafloor spreads apart magma moves up and flows from the cracks cools=seafloor
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| Plate Tectonics | Earth's crust are broken into sections called plates which move on a plasticlike layer of the mantle
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| Plate | sections of Earth's crust
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| Lithosphere | plates and upper mantle form the lithosphere
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| Asthenosphere | plasticlike layer below the lithosphere
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| Convection Current | thought to be the force behind plate tectonics
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| Earthquakes | caused by strike-slip faults
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| Primary Waves | 2x faster than secondary waves
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| Secondary Waves | 2x slower than primary waves
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| Surface Waves | the waves we feel during an earthquake
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| Epicenter | directly above the focus; at the surface
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| Seismograph | measures the strength of the earthquake
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| Volcano | an opening in Earht that erupst gases, ash, and lava
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| Vent | the opening that magma flows out of
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| Crater | the steep-walled depression around a volcano's vent is the crater
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| Hot Spot | some areas at the boundary between Earht's mantle and core are unusually hot
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| Sheild Volcano | quiet eruptions of basaltic lava spread out in flat layers
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| Cinder Cone Volcano | when tephra falls to the ground, it forms a steep-sided, loosely packed cinder cone volcano
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| Composite Volcano | the eruption can be explosive then, can switch to a quieter period, erupting lava over the top of the tephra layer
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| Tephra | bits of rock or solidified lava dropped from the air are called tephra
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Created by:
Abigail Garrett
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