How do rip currents form, and what should you do if you are caught in one? What will be an ideal response?
Water comes into shore from the ocean, moves parallel to the shore for a while, and then moves
seaward in a narrow surface current that flows through the breaker zone. If you are caught in one, do
not try to swim directly back to shore; it will not work. You must swim parallel to the shore for a short
distance to get out of the rip current, and then swim shoreward.
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Which indicator willincrease in a country that has experienced a dramatic jump in urban population growth over the last 50 years?
A. overall population B. consumption per person C. income per person D. waste per person
True or False: The elastic rebound theory explains earthquakes as sudden brittle failure following the buildup of elastic strain
Indicate whether this statement is true or false.
The upper part of a thunderstorm cloud is normally __________ charged, and the middle and
lower parts are __________ charged. a. negatively, negatively b. negatively, positively c. positively, positively d. positively, negatively
Rossby waves
A) have troughs that develop behind surface cold fronts. B) can have up to three troughs for every ridge, and vice versa. C) have little effect on divergence aloft. D) have little effect on surface pressure.