Author Question: If you are at the beach and blunder into a rip current, how do you get out? a) Swim really hard ... (Read 86 times)

rlane42 · **on:** Aug 22, 2018

If you are at the beach and blunder into a rip current, how do you get out?

a) Swim really hard toward the beach
b) Swim perpendicular to the current until you are out (usually parallel to shore)
c) Ride out the current until it dissipates
d) Call 911 on your cell phone
e) Dive under the current and swim toward shore

Question 2

If satellites can measure the depth of the sea floor, why is it necessary to make bathymetry soundings from a ship?

a) Multi-beam echo sounders provide information in addition to depth, including the composition of the seafloor
b) The shape of the sea surface as measured by satellites does not exactly mimic the bathymetry of the seafloor
c) Satellites do not actually measure ocean depth
d) Shipboard data is needed to calibrate satellite sea surface height measurements
e) All of the above