Download Chapter 20 Study Notes Ocean Water

Chapter 20 Study Notes
Ocean Water
1
• A layer of _____ covering ocean water in
Polar Regions is called ____ ______.
– ice
– pack ice.
2
• A major problem for ________ is
________.
– aquaculture
– pollution.
3
• As deep ocean water becomes ________,
it also becomes ________ and ______
through the ocean basins.
– colder,
– denser
– sinks
4
• As the ________ changes, the ocean and
atmosphere are continuously exchanging
___________.
– temperature
– gases.
5
• By studying variations in _____ in the
ocean, scientists can determine the
presence of ________.
– color
– phytoplankton.
6
• _______________ dissolve most easily in
_____________ ocean water.
– Gases
– cold
7
• In addition to increased use of _____
chemicals, increased world _______ has
reduced the ocean’s ability to renew itself.
– toxic
– population
8
• ______ _______ live in the ______ zone.
– Marine
– mammals
– pelagic
9
• Most ______________ enters the ocean
from the ______________________.
– oxygen
– atmosphere
10
• Most offshore ________ and petroleum
deposits are found along continental
_________________.
– oil
– margins.
11
• Most wavelengths of visible ______ are
absorbed by ocean water and microscopic
sea life, the one color that is most
_________ is _______.
– light
– reflected
– blue.
12
• Ocean water ________ depends on the
solar energy an area receives and the
water’s ________________.
– temperature
– movement.
13
• ______ are the foundation of life in the
ocean because they form the base of the
ocean ______ _____.
– Plankton
– food chain.
14
• _____ is the “_______of life” in the ocean.
– Plankton
– foundation
15
• Raising aquatic plants and animals for
human consumption is __________.
– aquaculture.
16
• _____ _____ are an example of _______.
– Sea sponges
– benthos.
17
• Some of the most deadly _________
found in ocean water today include
mercury, toxic chemicals such as DDT,
and ________.
– pollutants
– lead.
18
• The most ______ ocean resource, found
beneath the ocean floor, is _________.
– valuable
– petroleum.
19
• The Ocean is often referred to as a
______ _____ because it contains 60
times more carbon than the atmosphere.
– carbon
– sink
20
• The ocean is the main source of the _____
minerals _______ and _______.
– trace
– magnesium
– bromine.
21
• The ocean zone that receives the ______
_____ energy and is home to the most
diverse ocean life forms is the ______
_________.
– most
– solar
– pelagic zone.
22
• The process of _______ salt from ocean
water is called ___________.
– removing
– desalination.
23
• ________ elements in the ocean are those
minerals that are _______ in amount.
– Trace
– smallest
24
• When surface ocean water is ______ by
solar energy, its density _________.
– warmed
– decreases.
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