If a sound pulse is sent vertically downward into the sea and its reflected echo from the seafloor returns 6 seconds later, the depth of the water is ________ meters. (The average speed of sound in seawater is 1500 m/sec.)

A. 3000
B. 9000
C. 6000
D. 4500
E. 12,000


Answer: D

Environmental & Atmospheric Sciences

You might also like to view...

Suppose a weather forecast states the following: Light rain and cold today with temperatures just above freezing; southeasterly winds shifting to westerly tonight; turning colder, with rain becoming mixed with snow, then changing to snow. Which of the following types of weather fronts would be responsible for this forecast?

A. cold-type occluded front B. warm-type occluded front C. cold front D. warm front

Environmental & Atmospheric Sciences

NADPH is needed for the synthesis of which of the following?

A) amino acids B) cholesterol C) unsaturated fatty acids D) all of these

Environmental & Atmospheric Sciences

Plate tectonic processes can affect climate

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

What is balkanization? Give one example of how it has occurred in Europe

Environmental & Atmospheric Sciences