During the dilatency stage prior to an earthquake:
a. seismic velocity increases and the number of foreshocks decreases
b. seismic velocity decreases and the number of foreshocks increases
c. seismic velocity increases and the number of foreshocks decreases
d. seismic velocity decreases and the number of foreshocks decreases
b
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The point of origin of an earthquake at depth is called _____.
a.) a foreshock b.) the epicenter c.) the focus d.) an aftershock e.) the fixed point
An igneous rock with no visible crystals ____
A)has a phaneritic texture B)cooled quickly in a magma chamber C)slowly on Earth's surface D)cooled quickly on Earth's surface E)is granite
All other factors equal, if a body of magma becomes more felsic, its viscosity will ________.
A. Increase B. decrease C. stay the same chemical D. composition has no effect on viscosity
The sport of __________ is Canada's most prevalent sport and its most popular spectator sport.
-ice hockey -lumberjacking -bull riding -curling -Canadian rules football