A basic tool for indirectly studying the sea floor is the ________, which measures water depth.

A. rock dredge
B. drilling ship
C. submersible
D. gravimeter
E. echo sounder


Answer: E

Environmental & Atmospheric Sciences

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Which of the following describes the amount of oxygen inhaled in a single breath at the 500 hPa level, compared to that inhaled at sea level?

A. The amount is about the same. B. The amount is about three-quarters. C. The amount is about one-quarter. D. The amount is about one-half.

Environmental & Atmospheric Sciences

Briefly explain why the temperature decreases as altitude increases in the troposphere (at the normal lapse rate).


What will be an ideal response?

Environmental & Atmospheric Sciences

The average rate of seafloor spreading in modern oceans is ________

A) 5 centimeters per year B) 8 centimeters per year C) 2 centimeters per year D) 15 centimeters per year

Environmental & Atmospheric Sciences

What type of faults tend to produce the most destructive earthquakes?

What will be an ideal response?

Environmental & Atmospheric Sciences