Satellites use microwave beams to measure sea level to an accuracy of four ________
A) centimeters
B) millimeters
C) decimeters
D) meters
E) kilometers
A
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The noontime sun angle is greatest
A) near the equator at the spring equinox. B) near the equator at the summer solstice. C) in the Arctic during the northern hemisphere summer. D) in the Arctic during the northern hemisphere winter.
P waves are
A. compressional B. tensional C. transverse
The scientific method is characterized as:
a. an orderly process in which theories are proved to be absolutely true. b. an orderly process in which a test simplifies an observation in nature by controlling the conditions in which they are made. c. an orderly process in which theories are verified or rejected. d. a testable speculation or explanation of a theory.
Pahoehoe is best described as ____
a. blocky and angular b. ropy c. intrusive d. a type of columnar jointing e. a volcanic fissure