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Hydrology Review
Test Description: It's my Hydrology test
Instructions: Answer all questions to get your test result.
1) 1 Which will most likely result if there is increased upwelling in a coastal area?
A
more aquatic life
B
higher water temperatures
C
less nutrients in the water
D
fewer nitrates
2) 2 Which best determines the health of a lake used as a source of freshwater?
A
its location and depth
B
its temperature and pH
C
its temperature and depth
D
its depth and width
3) Why is water from an aquifer more likely to be cleaner than water from other sources?
A
because pollutants are filtered by rock and soil deep within Earth
B
because it rises to the surface near the ocean
C
because it receives water directly from precipitation
D
because it forms where fresh and salt water meet
4) 4 In which oceanic zone do clams and crabs survive by burrowing in the sand?
A
deep ocean
B
intertidal
C
oceanic
D
open ocean
5) 5 If a body of water has high turbidity levels, what can most likely be concluded?
A
It is unsafe to drink.
B
It contains a lot of chemicals.
C
It is too hot to drink.
D
It has a low pH.
6) 6 Which best describes the characteristics of a river basin?
A
the land drained by a river and its tributaries
B
the land formed when rivers create estuaries and marshes
C
the land at the mouth of a river where water flows into the ocean
D
the land formed as a result of a river flooding
7) 7 Which factors can have the greatest effect on the health of a river system?
A
human consumption and pH
B
nitrate levels and turbidity
C
type of soil and salinity
D
natural disasters and tidal changes
8) 8 In the United States, which is responsible for ensuring the safety of the country’s drinking water?
A
National Oceanic and Atmospheric Administration (NOAA)
B
Center for Disease Control (CDC)
C
Environmental Protection Agency (EPA)
D
Food and Drug Administration (FDA)
9) 9 What is the most likely reason that upwelling creates productive fisheries?
A
It helps nutrients sink to the bottom of the ocean
B
It removes nitrates from the water
C
It brings cold, nutrient-rich water to the surface
D
It lowers the pH
10) An ecologist found that the DO in a lake was highest in February and lowest in July. What is the most likely reason that this occurred?
A
There were higher nitrate levels in July
B
There were higher temperatures in July and lower temperatures in February
C
The lake had a lower pH in July
D
The lake had more photosynthesis occurring in February than in July
11) Why does reducing runoff from impervious surfaces improve water quality?
A
because it prevents water from seeping into aquifers
B
because the water infiltrates into aquifers and is filtered by rock and soil
C
because it allows water to pick up more pollutants from roads
D
because it causes more water to run along storm drains, cleaning them out
12) 12 In which oceanic area does food energy come from chemosynthesis?
A
intertidal
B
Hydrothermal Vents
C
Photic zone
D
Neritic zone
13) If a body of water has very high pH, what can most likely be concluded?
A
It has high DO
B
It is too hot to drink.
C
It contains a lot of sediment.
D
It is unsafe to drink.
14) Which best describes why we should protect estuaries?
A
they are breeding grounds for many aquatic species
B
they provide an area for recreation
C
All of these answers
D
they filter pollutants and erosion
15) What is the most likely reason that nitrate levels affect the health of rivers?
A
High nitrate levels make water taste better
B
High nitrate levels increase dissolved oxygen
C
High nitrate levels cause eutrophication
D
High nitrate levels can lead to high turbidity
16) In the United States, which agency enforces the Clean Water Act and Safe Drinking Water Act?
A
National Oceanic and Atmospheric Administration (NOAA)
B
Food and Drug Administration (FDA)
C
Environmental Protection Agency (EPA)
D
Center for Disease Control (CDC)
17) High nitrates lead to algae blooms. These algae die and rot, which reduces dissolved oxygen. What is this process called?
A
Biomagnification
B
Eutrophication
C
Turbidity
D
Upwelling
18) ___________ is a point source of pollution. ______________ is a nonpoint source of pollution
A
farm waste runoff, oil spills
B
oil spills, farm waste runoff
C
farm waste runoff, acid rain
D
oil spills, sewer pipes leading directly to a river
*select an answer for all questions
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