31 of them!
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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vibrations that travel through Earth carrying the energy released during an earthquake | sesmic waves
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the force exerted on a surface divided by the total area over which force is exerted | pressure
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the layer of rock that forms Earth's outer surface | crust
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a dark dense igneous rock with a fine texture found in oceanic crust | basalt
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a usually light colored igneous rock that is found in continental crust | granite
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the layer of hot solid material between Earth's crust and core | mantle
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a rigid layer made up of the uppermost part of the mantle and the crust | lithosphere
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the soft layer of the mantle on which the lithosphere floats | asethenosphere
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a layer of molten iron and nickel that surrounds the inner core of Earth | outer core
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a dense sphere of solid iron and nickelat the center of Earth | inner core
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the direct transfer of energy through space by electromagnetic waves | radiation
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the direct transfer of thermal energy from one substance to another substance that is touching | conduction
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the transfer of thermal energy by the movement of a fluid | convection
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the amount of mass inn a substance in a given volume; mass per unit volume | density
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the movement of a flud by differences in temature that transfers heat from one part of the fluid to another | convection current
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the hypothesis that the continents slowly move across Earth's surface | continental drift
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the name of the single landmass that broke apart 200 million years agoand gave rise to todays continents | pangaea
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a trace an acient organism that has been preserved in a rock | fossil
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an undersea mountain chain where no ocean floor is produced | mid ocean ridge
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a device that determined the distance of an object under water by recording echos of sound waves | sonar
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the process by which molten material adds new oceanic crust to the ocean floor | sea floor spreading
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a deep valley among the ocean floor beneath which oceanic crust slowly sinks toward the matle | deep ocean trench
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the process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundary | subduction
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a section of the lithosphere that slowly moves over the asthenosphere carrying pieces of of continental and oceanic crust | plate
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a well tested concept that explains a wide rang of observations | scientific theory
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the theory that pieces of Earth's lithosphere are in constant motion driven by convection currents in the mantle | plate tectonics
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a break or crack in Earth's lithosphere along which the rocks move | fault
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aa plate boundary where two platesmove away from eachother | divergent boundary
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a deep valley that forms where two plates move apart | rift valley
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a plate bboundary where two plates move toward eachother | convergent boundary
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a plate boundary where two plates move past eachother in opposite directions | transform boundaries
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