Inside Earth Unit Test Study Guide
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| The four main layers of the Earth's interior in order from top to bottom: | 1) Crust 2)Mantle 3) Outer Core 4) Inner Core
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| How many major plates is the Earth divided into? | 7
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| How many minor plates is the Earth divided into? | 2
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| Convection Currents | Causes the tectonic plates to move.
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| Sea-Floor spreading is causing the Atlantic ocean to grow? | Bigger
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| Subduction | When one plate is pushed under another towards the mantle.
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| Where do most metamorphic rocks form? | deep underground
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| A rocks TEXTURE | The look and feel of a rocks surface.
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| The different forces that can wear away rock are: | 1) water 2) wind 3) ice 4) gravity 5) weathering
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| The order of sedimentary rock formation is: | 1) erosion 2) deposition 3) compaction 4) cementation
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| The formation of igneous rocks | Form from hardened magma or lava.
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| The formation of sedimentary rocks | Sediments are deposited in layers and over time are compacted and cemented together.
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| The formation of Metamorphic rocks | Rocks are carried below Earth's surface, subjected to extreme heat and pressure and morphed into a new rock.
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| What does inorganic mean when it comes to minerals? | NOT formed from living things or the remains of living things.
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| Streak | The color of a minerals powder.
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| Why is coal NOT considered a mineral? | Because it's organic (made from living things).
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| Fracture | The way a mineral looks when it breaks apart irregularly.
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| Cleavage | A mineral's ability to split easily along flat surfaces.
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| Luster | The way it reflects light from its surface.
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| Fredrich Moh | A mineral expert who created the Mohs Hardness Scale.
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| Moh's Harndess Scale | Ranks a minerals hardness. It ranks it from 1 - 10 and 1 being the softest and 10 being the hardest.
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