All about volcanoes AND EARTHQUAKES
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| Earth's solid, rocky surface containing two continents and ocean floor | Crust
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| Hot, molten rock below Earth's surface | Magma
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| The idea thar earth's surface is broken into plates that slide slowly across the mantle | Plate tectonics
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| The layer beneath earth's crust | Mantle
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| The sliding of a denser ocean plate under another plate when they collide | Subduction
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| A huge crack in the earth's crust at or below the surface, the sides of which may show evidence of motions | Fault
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| The point where an earthquake starts as rocks begin to slide past eachother | Focus
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| A sensitive device that detects the shaking of eath's crust during an earthquake | Siesmograph
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| The point on earth's surface directly above the focus of an earthquake | Epicenter
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| The amount of energy released by an earthquake | Magnitude
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| The central opening in a volcanic area through which magma may escape | Vent
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| Magma that reaches Earth's surface and flows out of a vent | Lava
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| A cuplike hollow that forms at the top of a volcano around the vent | Crater
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| A very hot part of the Sun's mantle, where magma can melt through a plate moving above it | Hot spot
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| A steep-sided cone that forms from explosive eruptions of hot rocks, ranging from particles to boulders | Cinder-cone volcano
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| A wide, gently sloped cone that forms from flows of lava | Shield volcano
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| A cone formed from exlposive eruptions of hot rocks followed by a flow of lava, over and over | Composite volcano
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| Heat from below earth's surface | Geothermal energy
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| Name three kinds of fault | Normal fault, Reverse Fault, and Strike-Slip
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| What does the Ricter Scale measure | The energy released in an earthquake
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| What does the Mercali Scale measure | The damage and destruction an earthquaked has caused
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| Shaking of the earth's crust after the initial shaking of an earthquake | Aftershock
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| What kind of data does a seismograph show | Patterns in the waves that arrive
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| What are the parts of a seismograph | Recording paper, revolving drum, spring, pen, heavy mass
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| How are data recorded on a seismograph | The pen on it moves up and down caused by the motion of earth during an earthquake drawing lines on the recording paper, indicating the strength of the earthquake
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