When high or low tidal currents begin to change direction, it is called:a
Ebb water
b. Flood water
c. Slack water
d. Stagnant water
ANS: C
Slack water occurs when the tidal currents shift in direction. This is a period of no current in itself.
Information can be found in the section The Dynamic Theory of Tides Adds Fluid Motion Dynamics to
the Equilibrium
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The World Wildlife Federation claims the world surpassed its sustainable level around
A) 1960. B) 1970. C) 1980. D) 1990. E) 2000.
Which of the following best explains why urbanization has led to larger and more frequent floods?
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A dryline is a stalled cold front
a. true b. false