Download Chapter 20 Study Notes Ocean Water

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