The most useful way to measure seafloor depth is to ____. use an energy source t
ID: 157485 • Letter: T
Question
The most useful way to measure seafloor depth is to ____.
use an energy source to produce strong waves that will reflect from the seafloor and layers beneath the seafloor
extrapolate depth from temperature and pressure changes
make trips to the seafloor in modern submersibles
measure the time it takes for sound waves to travel from a ship to the seafloor and back
use a very long line with a weight attached
a.use an energy source to produce strong waves that will reflect from the seafloor and layers beneath the seafloor
b.extrapolate depth from temperature and pressure changes
c.make trips to the seafloor in modern submersibles
d.measure the time it takes for sound waves to travel from a ship to the seafloor and back
e.use a very long line with a weight attached
Explanation / Answer
option d
this is among the most commonly used method. this is the phenomenon which is also used in ultrasonography. 10-30 khz sound is used ans time is calculated.