1. Chapter 20 Study Notes
Ocean Water

2. Properties of Ocean Water
Chapter 20 Section 1
Properties of Ocean Water

3. 1 Most _______ enters the ocean from the ___________. oxygen
atmosphere

4. 2
_______ dissolve most easily in ______ ocean water.
Gases
cold

5. 3
As the __________ changes, the ocean and atmosphere are continuously exchanging ______.
temperature
gases

6. 4
The Ocean is often referred to as a ______ _____ because it contains 60 times more carbon than the atmosphere.
carbon
sink

7. 5
________ elements in the ocean are those minerals that are _________ in amount.
Trace
smallest

8. 6
Ocean water ___________ depends on the solar energy an area receives and the water’s ___________.
temperature
movement

9. 7
A layer of _____ covering ocean water in Polar Regions is called ______ ___.
ice
pack
ice

10. 8
When surface ocean water is ________ by solar energy, its density _________.
warmed
decreases

11. 9
As deep ocean water becomes ________, it also becomes ________ and ______ through the ocean basins.
colder
denser
sinks

12. 10
Most wavelengths of visible ______ are absorbed by ocean water and microscopic sea life, the one color that is most _________ is _______.
light
reflected
blue

13. 11
By studying variations in _____ in the ocean, scientists can determine the presence of ____________.
color
phytoplankton

14. Chapter 20 Section 2
Life in the Ocean

15. 12 ________ is the “__________of life” in the ocean. Plankton
foundation

16. 13
________ are the foundation of life in the ocean because they form the base of the ocean ______ _____.
Plankton
food
chain

17. 14
_____ _______ are an example of _______.
Sea
sponges
benthos

18. 15
The ocean zone that receives the ______ _____ energy and is home to the most diverse ocean life forms is the ______ ______.
most
solar
pelagic
zone

19. 16
______ _________ live in the ______ zone.
Marine
mammals
pelagic

20. Chapter 20 Section 3
Ocean Resources

21. 17
The process of _________ salt from ocean water is called ___________.
removing
desalination

22. 18
The most ________ ocean resource, found beneath the ocean floor, is _________.
valuable
petroleum

23. 19
Most offshore ____ and petroleum deposits are found along continental ________.
oil
margins

24. 20
The ocean is the main source of the _____ minerals __________ and _______.
trace
magnesium
bromine

25. 21
Raising aquatic plants and animals for human consumption is __________.
aquaculture

26. 22
A major problem for ___________ is ________.
aquaculture
pollution

27. 23
In addition to increased use of _____ chemicals, increased world ____________ has reduced the ocean’s ability to renew itself.
toxic
population

28. 24
Some of the most deadly _________ found in ocean water today include mercury, toxic chemicals such as DDT, and ________.
pollutants
lead

29. THE END