How do centripetal forces and gravitation forces interact to produce the tides?
What will be an ideal response?
The tide-generating forces create two simultaneous bulges: one on the side of Earth directed toward the Moon (the zenith) and the other on the side directed away from the Moon (the nadir). On the side directly facing the Moon, the bulge is created because the provided gravitational force is greater than the required centripetal force. On the side facing away from the Moon, the bulge is created because the required centripetal force is greater than the provided gravitational force. Although the forces are oriented in opposite directions on the two sides of Earth, the resultant forces are equal in magnitude, so the bulges are equal.
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According to the Köppen system of classifying climates, in which of the following climate types would most of the precipitation occur during the cold season?
A. Cfa B. Cs C. Cfb D. Cwa
Paradigm shifts occur when ethical considerations are incorporated into scientific theory.
Answer the following statement true (T) or false (F)
The greatest concern for the worldwide loss of species is ________
A) habitat destruction B) decreased soil nutrients C) anthropogenic activities D) air pollution E) water pollution
Which reptile group is considered to have been the ancestor for the mammals?
a. captorhinomorphs b. pelycosaurs c. Edaphosaurus d. Hylonomous e. alligators