Who came up with the dynamic theory of tides?
a. Isaac Newton
b. Pierre-Simon Laplace
c. Galileo
d. Pytheas
ANS: B
Pierre-Simon Laplace took into consideration the speed of the long tidal wavelength in shallow waters
in addition to the interference of continents. He also thought about the circular movements in water
basins. This was a more encompassing idea about tides. Information can be found in the section Tides
Are the Longest of All Ocean Waves.
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The largest nonpoint source of water pollution is:
A. Urban development B. Agriculture C. Industrial development D. Transportation
Only 50 nations are involved in the World Meteorological Organization
Indicate whether the statement is true or false
The blood-brain barrier is impermeable to which of the following species?
A) oxygen B) carbon dioxide C) glucose D) none of these
You are standing above a 20 m high sea cliff with a large beach below you. All around you is a flat surface with thin soil on a rocky base. In the distance you see another flat bench but it is about 30 m higher than you are. Where are you?
A) on a dune field behind an active shoreline B) on a subsiding coastline where a recent earthquake happened to uplift the seabed C) on an uplifted wave-cut terrace along an emergent coastline D) You must be on the moon; there is nothing like that on Earth.