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Related Flashcards
Cards In This Set
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What is the Asthenosphere?
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A plasticlike layer of Earth's surface below the lithosphere ( plasticlike is hint)
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What a convection current?
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A cycle of heating, rising, cooling, and sinking
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What is a subduction zone?
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The area where an oceanic plate goes down into the mantle.
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What are plate tectonics?
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The theory that states that earths crust and upper mantle are broken into sections, which move around on a special layer of the mantle.
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What is a transform boundary?
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Plate boundary that occurs when two plates slide past one another.
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What is a convergent boundary?
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Place where two plates move together.
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What is the lithosphere?
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Ridgid layer of earths surface made up of the crust and a part of the upper mantle.
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What is a magnetometer?
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A sensing device that detects magnetic fields, helping to confirm seafloor spreading
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What is a Pangaea?
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One large alndmass hypothesized to have broken apart about 200 million years ago into continents.
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What is continental drift?
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Hypothesized that the continents have moved slowly to their current locations.
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What is a divergent boundary?
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Boundary between two plates that are moving apart.
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What are plates?
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Sections of Earth's crust and upper mantle.
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What is the mantle?
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Largest layer of earths surface, composed mostly of silicon, oxygen, magneism, and iron.
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What is the crust?
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The outernost layer of Earths surface.
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What is a strike-slip fault?
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Where rocks on oppposite sides of a fault move in opposite directions or in the same direction at different rates.
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