Hydrosphere EOG Practice Question Preview (ID: 37654)


Hydrosphere EOG Practice. TEACHERS: click here for quick copy question ID numbers.

Which change indicates a decrease in the pH of a body of water?
a) The water becomes turbid.
b) Large number of organisms begin to die.
c) Dissolved oxygen levels increase.
d) Aquatic plants increase in numbers.

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.

What does a pH of 7 most likely indicate about the water quality?
a) The water is a strong base.
b) The water is highly acidic.
c) The water is toxic to drink.
d) The water is safe to drink.

Which most likely has the highest number of contaminants in the water?
a) a water system with moderate turbidity
b) a water system with high turbidity
c) a water system with low turbidity
d) a water system with no turbidity

Which characteristic distinguishes an estuary from other bodies of water?
a) plant life
b) Animal life
c) salinity levels
d) dissolved oxygen levels

Which type of ocean water would contain more dissolved oxygen?
a) cold ocean water in polar regions
b) warm ocean water in tropical regions
c) temperate ocean water in subtropical regions
d) none of the above

Which provide the best source of information about the quality of water in aquifers?
a) Lakes
b) Septic Tanks
c) Wells
d) all the above

Which best describes the water found in estuaries?
a) brackish
b) salt water
c) freshwater
d) Thomas Water

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

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

Why do lakes, rivers, and streams most likely require more treatment than groundwater?
a) They are classified as surface water resources.
b) They experience fewer governmental regulations.
c) They are exposed to a greater variety of contaminants.
d) all the above

How does the use of a pH meter help monitor the hydrosphere?
a) by indicating whether the water is too acidic or basic
b) by indicating if there is too much sediment in the water
c) by indicating whether microorganisms are living in the water
d) by indicating if there is enough dissolved oxygen in the water

According to scientists, only 1% of the water on Earth is available for human use. Where is this most of Earth's freshwater located?
a) Aquifers
b) lakes
c) Icebergs
d) Oceans

Which of the following contains the most water on Earth?
a) Lakes
b) Rivers
c) Aquifers
d) Oceans

Which technology below, has allowed scientists to accurately map the ocean floor?
a) sonar
b) sattilites
c) scuba gear
d) robots

Which is the largest zone in the ocean?
a) Open Ocean
b) Neretic Zone
c) Intertidal Zone
d) Capo Zone

Which phase of water in the water cycle best drives weather and climate as it travels around Earth?
a) Ice
b) Water
c) Water Vapor
d) Polar caps

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