Where is the seaward limit of a beach?
a. Longshore bars
b. Berms
c. Where the longshore drift is the strongest
d. Where the sediment stops moving onshore or offshore
ANS: D
The seaward limit of a beach is where there is no longer any exchange of sediments. This location
varies from beach to beach. Information can be found in the section Beaches Dominate Depositional
Coasts.
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Air at the equator is much warmer than air at the North and South Poles. Which of the following scenarios is most likely to decrease the difference in temperature between the equator and poles?
A) Earth spinning without a seasonal tilt to its axis B) Earth being completely covered with water C) Earth rotating in the opposite direction D) Earth being completely covered by land
Which of the following is true of ionic compounds?
A) They are liquids at room temperature. B) They are solids in which individual molecules are present. C) They are solids in which both cations and anions are present. D) Depending on the compound any one of the above may apply.
A watershed is ________
A) an inland basin that connects to another inland basin B) the water held in the atmosphere prior to returning to Earth in the form of rainfall C) a river that drains into the sea D) the area of land from which rainfall drains into rivers or lakes E) a term used to describe water stored underground