Which type of waves are called “body waves” because they move through the interior of Earth?
a. ?P waves only
b. ?S waves only
c. ?surface waves only
d. ?S waves and surface waves
e. ?S and P waves
ANSWER: e
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Of the great current circuits in the world ocean, there are ________ in the Northern Hemisphere and ________ in the Southern
a. 4; 2 b. 2; 4 c. 3; 3 d. 6; 6
Migmatite ____
A)is produced during the lower temperature range of metamorphism B)is a nonfoliated rock C)never occurs due to regional metamorphism D)always shows rotational metamorphism E)has both igneous and metamorphic characteristics
Assuming a base temperature of 18°C, how many heating degree-days are there for a day with a maximum temperature of -1°C and a minimum temperature of -7°C?
A. 26 B. 24 C. 22 D. 20
Which method is used by RUSLE to compute the average soil loss from six factors?
A. multiplication of the six factors B. weighted linear combination of the six factors C. addition of the six factors