Hydrology Review Question Preview (ID: 16783)
It's My Hydrology Test.
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In the United States, which agency enforces the Clean Water Act and Safe Drinking Water Act?
a) Food and Drug Administration (FDA)
b) National Oceanic and Atmospheric Administration (NOAA)
c) Center for Disease Control (CDC)
d) Environmental Protection Agency (EPA)
What is the most likely reason that nitrate levels affect the health of rivers?
a) High nitrate levels increase dissolved oxygen
b) High nitrate levels can lead to high turbidity
c) High nitrate levels cause eutrophication
d) High nitrate levels make water taste better
Which best describes why we should protect estuaries?
a) they are breeding grounds for many aquatic species
b) they filter pollutants and erosion
c) they provide an area for recreation
d) All of these answers
12 In which oceanic area does food energy come from chemosynthesis?
a) Photic zone
b) intertidal
c) Neritic zone
d) Hydrothermal Vents
If a body of water has very high pH, what can most likely be concluded?
a) It has high DO
b) It is unsafe to drink.
c) It is too hot to drink.
d) It contains a lot of sediment.
Why does reducing runoff from impervious surfaces improve water quality?
a) because the water infiltrates into aquifers and is filtered by rock and soil
b) because it causes more water to run along storm drains, cleaning them out
c) because it prevents water from seeping into aquifers
d) because it allows water to pick up more pollutants from roads
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) The lake had a lower pH in July
b) The lake had more photosynthesis occurring in February than in July
c) There were higher nitrate levels in July
d) There were higher temperatures in July and lower temperatures in February
9 What is the most likely reason that upwelling creates productive fisheries?
a) It removes nitrates from the water
b) It lowers the pH
c) It brings cold, nutrient-rich water to the surface
d) It helps nutrients sink to the bottom of the ocean
8 In the United States, which is responsible for ensuring the safety of the country’s drinking water?
a) Environmental Protection Agency (EPA)
b) Food and Drug Administration (FDA)
c) National Oceanic and Atmospheric Administration (NOAA)
d) Center for Disease Control (CDC)
7 Which factors can have the greatest effect on the health of a river system?
a) type of soil and salinity
b) nitrate levels and turbidity
c) human consumption and pH
d) natural disasters and tidal changes
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
4 In which oceanic zone do clams and crabs survive by burrowing in the sand?
a) oceanic
b) intertidal
c) deep ocean
d) open ocean
5 If a body of water has high turbidity levels, what can most likely be concluded?
a) It has a low pH.
b) It is unsafe to drink.
c) It is too hot to drink.
d) It contains a lot of chemicals.
Why is water from an aquifer more likely to be cleaner than water from other sources?
a) because it forms where fresh and salt water meet
b) because it receives water directly from precipitation
c) because it rises to the surface near the ocean
d) because pollutants are filtered by rock and soil deep within Earth
1 Which will most likely result if there is increased upwelling in a coastal area?
a) more aquatic life
b) less nutrients in the water
c) higher water temperatures
d) fewer nitrates
2 Which best determines the health of a lake used as a source of freshwater?
a) its depth and width
b) its temperature and pH
c) its location and depth
d) its temperature and depth
High nitrates lead to algae blooms. These algae die and rot, which reduces dissolved oxygen. What is this process called?
a) Upwelling
b) Eutrophication
c) Biomagnification
d) Turbidity
___________ 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) oil spills, sewer pipes leading directly to a river
d) farm waste runoff, acid rain
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