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Plate tectonics

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    Plate tectonics
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  • Convection currents sink because the material is ______ dense. (more or less)
    more
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  • What creates the magnetic field of Earth?
    Iron Core
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  • What is the boundary where plates slide into each other?
    Convergent
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  • When oceanic crust is pushed under a continental plate, into the asthenosphere. ________ Zone
    Subduction Zone
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  • When plates crash into each other, the one that is more ______ will be pushed underneath.
    dense
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  • What is created when one oceanic plate crashes into a continental plate? You will find this on the ocean floor.
    Trench
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  • A transform plate boundary creates earthquakes and _______ lines.
    fault
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  • What are the two kinds of crust?
    Oceanic and Continental
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  • What is created when two Continental Plates crash into each other?
    Mountains
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  • What is created from Seafloor Spreading?
    Mid Ocean Ridge
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  • What is the boundary where plates pill apart called?
    Divergent
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  • The mineralized remains of organisms and the rock layers in which they are found.
    Fossil Record
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  • A fossil that is useful for dating and correlating the strata in which it is found.
    Index Fossil
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  • Where is the oldest layer of rock?
    Bottom
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  • Where is the newest layer of rock?
    Top
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  • Can we tell the exact age of a fossil from the rock surrounding it?
    no, not the exact, only relative.
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