Which of the following is true about where earthquakes occur?
A. Deep earthquakes are most common near rising mantle plumes.
B. Deep and intermediate-depth earthquakes occur near subduction zones.
C. Earthquakes are randomly distributed across most of Earth.
D. Earthquakes mostly occur away from plate boundaries.
Answer: B
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The elastic rebound theory involves the sudden release of progressively stored energy in rocks.
Answer the following statement true (T) or false (F)
How do coasts receive new sand? Describe the concept of a coastal cell
Which is not a reason that fresh water wells near coastlines abruptly become salty and unusable?
A) As water is pumped from the well, the freshwater runs out and leaves only the salty water from the sea. B) Salt water is denser than fresh water, so it lays on the lower part of coastal aquifers. C) Sea water infiltrates underlying pore spaces, making ground water beneath the sea floor salty. D) As water is pumped from the well, the saltwater part of the aquifer flows up because of decreased aquifer pressure.
When the circle of illumination just touches the Arctic Circle and the North Pole is dark, the date is closest to ________
A) March 23 B) June 21 C) September 23 D) December 21 E) July 4