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18 Cards in this Set
- Front
- Back
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Theory of Continental Drift
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Continents were once part of a single landmass that broke apart and moved to their present positions.
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Theory of Plate Tectonics
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Describes and explains the way the continents separated into today's land masses.
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Plate Boundary
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The region where two lithosphere plates meet
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Ring of Fire
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Belt of volcano and earthquake activity in the Pacific Ocean
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Faults
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Large cracks in Earth's crust
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Earthquake
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Violent shaking of the earth's crust
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Epicenter
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The spot on the Earth's surface directly above the focus
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Volcano
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Hill or mountain formed by material that erupts onto Earth's surface; caused by action of magma below surface
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Tsunami
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A giant, dangerous ocean wave triggered by an earthquake, landslide or volcanic eruption. Sometimes called tidal wave
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Forest Fire
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Burning of treed areas caused by lightning or human activity
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tornado
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Destructive, whirling, fast-moving storm that forms over land
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Hurricane
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Huge, slowly-spinning tropical storm that forms over water and has winds of at least 74 mph
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Flood
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low-lying land is covered by water
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Drought
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drying up of land from heat or lack of water
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Meteorite
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a piece of rock from space that enters Earth's atmosphere and burns, sometimes landing on Earth
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Landslide
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Large mass of soil or rock that slides down a slope
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Global Warming
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An increase in the world's average temperature, possibly caused in part by fossil fuel use
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Avalance
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Snow and ice suddenly being pulled down by gravity.
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