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24 Cards in this Set
- Front
- Back
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earthquake
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movement of the earth's crust
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mantle
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layer of the earth found between the core and the crust
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tsunami
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a huge sea wave this is caused by an earthquake
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Mt. St. Helens
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the name of a famous volcano that erupted in Washington
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dormant
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a volcano that is temporarily quiet, but could become active again
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Mt. Vesuvius
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the name of a famous volcano that covered the Roman town
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volcano
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the opening in the earth's crust from which molten magma erupts and flows out onto the earth's surface
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active volcano
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a volcano that is presently erupting
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Krakatoa
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name of a famous volcano in Indonesia that erupted with a force that could be heard 1000 miles away
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Richter Scale
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a numerical scale that measures the magnitude of an earthquake
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crust
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the earth's cool outer most layer
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fault
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a crack in the earth's surface where two plates come together
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seismograph
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a machine that detects and records earthquakes
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plate tectonics
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the movement of the continents due to shifting of the ocean's crust
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core
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the earth's super-hot innermost center
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lava
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molten rock after it comes out of a volcano
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geology
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the study of the earth and its changes
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magma
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molten rock found deep under the earth's surface
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topsoil
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mostly organic matter with nutrients and minerals
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bedrock
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solid rock mass
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subsoil
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middle layer of soil containing loose soil that roots can reach and animals can burrow in
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chemical weathering
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process in which rocks are decomposed, dissolved, or loosened to form new materials
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physical weathering
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breakdown of large rocks into smaller ones
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Pangaea
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name of the single landmass that broke apart thousands of years ago and gave rise to the continents
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