Contact metamorphic rocks are typically not foliated because
A) the parent rock does not contain the correct type of minerals to produce foliation.
B) contact metamorphism occurs from heat and not from deformation due to stress.
C) contact metamorphism does not produce minerals, such as the micas, which are needed for foliation to occur.
B
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Just as water flows from high to low pressure, electric charge flows from
A. high resistance to low resistance. B. high charge concentration to low charge concentration. C. high to low voltage. D. all of the above
The depth of wave base is the same as
A) the depth to which wave action extends. B) a depth equal to three times the wavelength of waves. C) the process by which waves move material along the bottom in very deep water. D) the inside of a tubular breaking wave that is perfect for surfing.
Atmospheric conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be ____________________ freezing, whereas surface temperatures are typically well ____________________ freezing during hailstorms.?
Fill in the blank with correct word.
The area of conflict between colder and warmer air masses in the subpolar region
A) is termed the polar front. B) is unrelated to the formation of cyclonic storms. C) is most distinctive during summer months in each respective hemisphere. D) is referred to as the subtropical contact zone.