Earth Science: Geology, the Environment, and the Universe

Section 1: Forces Within Earth

Forces Within the Earth

1
Which type of fault results in horizontal shortening?
A)reverse
B)shear
C)strike-slip
D)normal
2
__________ is the force per unit area acting on a material.
A)Stress
B)Rotation
C)Strain
D)Shear
3
At what point in the graph would a rock be permanently deformed?
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A)at the elastic limit
B)at the start of the stress
C)at the failure point
D)past the elastic limit
4
What does the straight part of a stress-strain graph portray?
A)ductile deformation
B)shearing direction
C)failure
D)elastic deformation
5
Where does an earthquake originate?
A)at Earth's inner core
B)at the P-wave
C)at the epicenter
D)at the focus
6
__________ causes permanent strain.
A)Tension
B)Compression
C)Elastic deformation
D)Ductile deformation
7
Which type of stress pulls a material apart?
A)shear
B)compression
C)tension
D)strain
8
__________ push and pull rocks in the same direction along which the waves are traveling.
A)Primary waves
B)Shear waves
C)Secondary waves
D)Surface waves
9
What are most earthquakes associated with?
A)divergent plate boundaries
B)mid-ocean ridges
C)rift valleys
D)plate boundaries
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