Ocean Properties
TRUE OR FALSE:
If you freeze salt water, the first ice crystals that form will NOT contain salt.
True
The long, narrow depressions located in the deep-ocean basins are called:
trenches
The top, or highest part of the wave is called:
crest
These microscopic organisms form the base of the food webs in the ocean:
plankton
Earth's largest ocean is:
Pacific Ocean
The periodic rise and fall in the water level of the oceans:
Tides
these underwater mountains are the most prominent features of the ocean basins:
mid-ocean ridges
caused by channels in underwater sand bars, these can quickly carry a swimmer away from shore
rip currents (rip tides)
Organisms that swim actively in the open ocean are called:
nekton
Earth's smallest ocean is:
Arctic Ocean
The name for raising aquatic plants and animals for human use:
aquaculture
The part of the continent that is covered by water is called:
continental shelf
Gyres in the Northern hemisphere spin this direction:
Clockwise
What region of ocean is above the benthic zone
the Pelagic Zone
This is the measure of dissolved salts in ocean water:
Salinity
What process gets fresh water out of salt water?
desalination
The vast flat level that covers over half of the deep-ocean basin.
abyssal plane
The distance that wind can flow across the open water to create waves is called:
fetch
organisms that live on the ocean floor, like oysters, starfish, and crabs.
benthos
SONAR is an abbreviation for:
SOnic Navigation And Ranging
Which layer of the ocean has a greater temperature drop as depth increases?
Thermocline
List the 3 parts of the ocean floor that are part of the continental margins
continental shelf, continental slope, continental rise
What 3 things control surface currents
wind, coriolis effect (rotation of the planet) and continents.
What benthic zone contains most of the organisms?
sublittoral zone
What is the name of the swift-moving warm current that moves North along the East Coast of the US?
Gulf Stream