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Geology1

TermDefinition
What are examples of the Most Majestic Mountain Ranges? Rockies, Himalayas, Andes
What is Deformation? Bending, tilting, breaking of the crust
What are Isostartic Adjustments? occurs because of parts of the earth are either lighter or heavier than the mantle.
What happens to heavy areas? They sink into the mantle because the crust presses down on the mantle.
What happens to lighter areas? They rise up higher on the mantle because the mantle presses up on the crust.
What happens if the areas are neither heavy or light? There is no movement.
What produces stress? High pressure and temperatures produced by adjustments and plate movements.
What are the 3 types of changes in the shape of rocks compression, tension, shearing
What does an anticline looks like? Upward curved, oldest layer in the center
What does a syncline look like? Downlard curved, youngest layer in the center
What does a monocline look like? Both limbs remain horizontal
What does a fracture look like? There is no movement in the rock on either side of the break. It just looks like a line.
What does a fault look like? There is movement in the rock on either side of the break - a valley in the rock.
What does folding look like? It isn't broken but permanently deformed
What is a mountain range? All the mountains are the same general shape and structure.
What is an example of a groupe of adjacent mountain ranges Cascades, Himalayas
What is a mountain system? A group of adjacent ranges (Apalacian Mountains)
What are mountain belts? Mountain systems that are part of two, even arger world wide belts.
What are earthquakes? Vibrations in the earth
Rocks under stress suddently shift along a _____ fault
If a fault is locked what happens to the stress in the rock? stress in the rock increases
Where does rock separate? at its weakest point
What is a rock rebound? It springs back to its original position
Rocks along a fault, as they slip into a new position release ______ energy
What are seismic waves? Energy in forms of vibrations
Seismic waves increase or decrease energy in nearby rock? increase
What is an aftershock? Small tremors after earthquakes
What is a shallow focus? Earthquake is within 70KM of the surface
What is an intermediate focus? Earthquake is between 70 and 300 km of the surface
What is a deep focus? Earthquake is deeper than 300km of the surface
Which focus causes the most damage The shallow focus
What is a seismograph An instrument used to record the waves of the earthquake
What are the 2 types of earthquake surface waves rolling rayleigh and love
Which type of earthquake wave causes the most damage rolling rayleigh
What type of earthquake wave causes sheesy type of wave love wave
Created by: 1237479666
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