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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
90%
B
40%
C
70%
D
10%
2) Which water reservoir contains the most water?
A
lakes
B
groundwater
C
streams
D
oceans
3) Water often is described as the universal solvent. What does that mean?
A
water always dissolves other liquids easily
B
water does not dissolve in other liquids easily
C
most substances do not dissolve in water
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 less dense than warm
B
warm will be on top because it is less dense than cold
C
cold will be on top because it is more polar than warm
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
evaporation
B
ionization
C
adhesion
D
cohesion
6) What agency is responsible for enforcing water pollution laws in the US?
A
EPA
B
NASA
C
USGS
D
DOE
7) Which term means looking after a body of water and helping to keep it clean?
A
stewardship
B
maintaining quality standards
C
monitoring the hydrosphere
D
eutrophication
8) What would happen to consumers if all producers perished?
A
consumers would move
B
consumers would decompose organic matter
C
consumers would make their own food
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
sea urchin
B
sea star
C
kelp
D
Sun
11) Why are estuaries an important habitat for many marine organisms?
A
there is more salt available in estuaries as compared to the open ocean
B
there are fewer nutrients in estuaries as compared to the open ocean
C
there is more food available 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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