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Natural environment
Related to any physical feature of the earth's natural environment.
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Natural environment > Earthquake 
resonance
Natural environment; Earthquake
An increase in the amplitude of vibration of a body when the frequency of shaking is close to the natural frequency of the body.
response spectrum
Natural environment; Earthquake
The peak response of a series of simple harmonic oscillators of different natural frequencies when subjected to a particular earthquake ground motion.
reverse fault
Natural environment; Earthquake
A fault in which one block of rock slides up over another.
rigidity
Natural environment; Earthquake
The angular shear strain produced from applying shear stress to a body. See shear modulus.
Sub-categories
- Air (43)
- Atmosphere (59)
- Climate (1147)
- Climate change (10457)
- Coral reefs (23903)
- Deserts (738)
- Earthquake (7143)
- Flood (34)
- Forests (37)
- Grassland (35)
- Land mass (144)
- Landslide (66)
- Mountains (203)
- Plateau (39)
- Speleology (1857)
- Volcano (5852)
- Water (18527)