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Hydrosphere
Test Description: Chap 5, 6, 7,8
Instructions: Answer all questions to get your test result.
1) Approximately what percentage of Earth's surface is covered by water?
A
40%
B
10%
C
70%
D
90%
2) Which water reservoir contains the most water?
A
streams
B
lakes
C
groundwater
D
oceans
3) Water often is described as the universal solvent. What does that mean?
A
water always dissolves other liquids easily
B
most substances do not dissolve in water
C
water does not dissolve in other liquids easily
D
most common substances dissolve in water
4) How will a layer of cold water and a layer of warm water settle in a container?
A
cold will be on top because it is more polar than warm
B
cold will be on top because it is less dense than warm
C
warm will be on top because it is less dense than cold
D
warm will be on top because it is more polar than cold
5) Which describes water molecules being attracted to other polar molecules?
A
ionization
B
evaporation
C
cohesion
D
adhesion
6) What agency is responsible for enforcing water pollution laws in the US?
A
NASA
B
DOE
C
EPA
D
USGS
7) Which term means looking after a body of water and helping to keep it clean?
A
monitoring the hydrosphere
B
maintaining quality standards
C
eutrophication
D
stewardship
8) What would happen to consumers if all producers perished?
A
consumers would make their own food
B
consumers would move
C
consumers would decompose organic matter
D
Consumers would die
9) Which are organisms that break down tissue and release nutrients and carbon dioxide back into the ecosystems?
A
producers
B
scavengers
C
consumers
D
decomposers
10) Which is a producer?
A
kelp
B
sea urchin
C
Sun
D
sea star
11) Why are estuaries an important habitat for many marine organisms?
A
there is more food available in estuaries as compared to the open ocean
B
there is more salt available in estuaries as compared to the open ocean
C
there are fewer nutrients in estuaries as compared to the open ocean
D
there are more predators in estuaries as compared to the open ocean
*select an answer for all questions
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