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21 Cards in this Set
- Front
- Back
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The study of the earth |
Geology |
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The three major sections of the earth |
The crust, mantle, and core |
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The earth's outer layer of rock |
The crust |
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The lower boundry of the crust |
Mohorovičić discontinuity or Moho |
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The middle layer of the earth |
The mantle |
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The central part of the earth |
The core |
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What theory states that slow convection currents in the upper mantle cause plates of the crust to drift slowly over the surface of the earth? |
Platetectonics |
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What do we call a fracture zone formed when a layer of rock that breaks under the strain and moves? |
A fault |
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The bending or buckling of rocks under great force |
A fold |
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Mountains that are thought to be formed when molten rock collect beneath overlying rock layer |
Domed mountains |
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What is an earthquake? |
Any trembling or shaking of the earth's crust |
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Smaller earthquakes or tremors that often follow an earthquake |
Aftershocks |
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Scientist that study earthquakes |
Seismologist |
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Tectonic earthquakes are the result of what? |
faulting (sudden movements of rock masses along a fault) |
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What theory states that rocks of either side of a fault spring back to a place of little or no strain at the moment of an earthquake? |
The elastic rebound theory |
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What's the famous strike-slip fault in western California? |
San Andreas Fault |
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The location directly above the point where an earthquake begins |
Epicenter |
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What are the three main types of seismic waves? |
P (primary) waves, S (secondary), and Surface waves |
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What instrument do seismologist use to study the vibrations caused by an earthquake? |
Seismograph |
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What is the famous scale popularly use to measure earthquake strength? |
Richter scale |
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What's a volcano? |
An opening in the earth's surface where hot gasses, ash, and molten rock are ejected from the earth's interior |
