Show:
JE
OP
AR
DY
!!!!
100
these inventions help to make ocean navigation more accurate
What are sea clocks
100
these animals use echolocation to move about in their environments
What are dolphins and bats
100
to reveal a water's depth, one should take a _____________
What is sounding
100
if a scuba diver ascends too quickly, this gas can form bubbles in his blood, causing the bends
What is nitrogen
100
these were used in cartographers' maps because they really didn't know what "was out there"
What are sea monsters
200
Sea surface salinity can be measured using these
What are satellites
200
the earliest known underwater exploration enclosures
What are diving bells
200
lead lines were replaced by this to measure water depth
What is sonar
200
the first vessel to descend into the Challenger Deep
What is the Trieste
200
People wanted to explore new territories for these two reason s
What are to trade and accumulate wealth
300
people began exploring oceans around this time, biblically speaking
What is after the fall of the Tower of Babel
300
collects water at different depths
What is a Niskin bottle
300
measures water clarity
What is a Secchi disk
300
first person to circumnavigate the world
Who is Magellan
300
This type of diving uses mixed-gas
What is extremely deep diving
400
the vessel to conduct the first true oceanic expedition
What is the HMS Challenger
400
the air pressure in a "moon pool" should be ___________ to the outside water pressure
What is equal
400
shortening dive times, ascending gradually, and using trimix gas are all measures taken by divers to prevent what?
What is decompression sickness
400
Maury's nickname
What is "Pathfinder of the Seas"
400
collects layers of sediment from the ocean floor
What is a gravity corer
500
collects pelagic organisms
What is a plankton net
500
collects and transmits a variety of sea data
What is a bouy
500
what did sonar do for the understanding of ocean basins?
What is information was easily obtained about large areas from the use of sonar
500
early type of deep-sea submersible
What is a bathyscaphe
500
collects benthic organisms
What is a grab sampler