6th grade plate tectonics
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| Holes drilled several kilometers into Earth's crust provide direct evidence about Earth's interior in the form of ? | rock samples
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| Geologists obtain indirect evidence about Earth's interior by? | recording and studying seismic waves
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| What is the correct order of Earth's layers? | crust, mantle, outer core, inner core
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| Earth's inner core is made of what? | a dense ball of solid metal
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| When you touch a hot pot or pan, energy moves from the pot to your hand. This is called? | heat transfer
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| The transfer of energy through empty space is called? | radiation
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| Heat transfer within a fluid takes place by? | convection currents
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| What is Pangaea/ | the name of the supercontinent that existed millions of years ago
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| Which type of evidence was NOT used by Alfred Wegener to support his continental drift hypotheses? | evidence from human remains
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| Most geologist rejected Alfred Wegener's idea of continental drift because? | Wegener could not identify a force that could move the continents.
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| What technology did scientists use in the mid-1900s to map the mid-ocean ridge? | sonar
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| In sea-floor spreading, molten material rises from the mantle and erupts | along mid-ocean ridges
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| How did scientists discover that rocks farther away from the mid-ocean ridge were older that those near it? | by determining the age of the rock samples obtained by drilling on the sea floor
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| The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as? | subduction
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| old oceanic crust is more dense than new oceanic crust because it is | cool
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| Most geologists think that the movement of Earth's plates is caused by | convection currents in the mantle
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| A place where two plates slip past each other, moving in opposite directions, is known as a | transform boundary
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| a rift valley forms at a | divergent plate boundary
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| Using data from seismic waves, geologist have learned that Earth's interior is made up of several | layers
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| Earth's magnetic field results from movements in the | outer core
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| Scientists think that convection currents flow in Earth's | mantle
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| A collision between two pieces of continental crust at a converging boundary produces a | mountain range
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| Any trace of an ancient organism that has been preserved in rock is called a | fossil
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| mid -ocean ridges are | found in all of Earth's ocean's
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| The place where two plates come together is known as a | convergent boundary
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| When you touch a hot plate, the heat transfer of heat from the plate to your hand is called | conduction
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| traces of ancient organisms preserved in rock | fossils
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| continually adds new crust to the ocean floor along both sides of the mid-ocean ridge | sea-floor spreading
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| subduction occurs where the oceanic crust bends down toward the mantle at a | deep-ocean trench
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| formation of volcanoes and mountain ranges can be explained by the theory of | plate tectonics
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| The inner core is surrounded by the hot, molten metal layer called? | outer core
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| asthenosphere is in what layer of the Earth | mantle
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| which layer of Earth is made up of part crust and part mantle | lithosphere
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