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This study note explores the essential characteristics of ocean water, including ice cover in polar regions, the impact of pollution on aquaculture, and the processes that lead to water density changes. It highlights the importance of phytoplankton in marine food chains, the role of gases dissolving in cold ocean water, and the significance of oceanic zones for diverse life. Additionally, it discusses harmful pollutants, valuable ocean resources like petroleum, and the ocean's function as a carbon sink, emphasizing its role in global ecosystems.
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Chapter 20Study 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.
