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Hydrosphere
Hydrosphere
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NCES.8.E.1 Earth Systems, Structure, and Processes (Hydrosphere)
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
What does pH measure?
nutrient level
turbidity
acidity / alkalinity
dissolved oxygen
2
If a pond is located in an area with high air pollution, which would be
most
directly affected?
dissolved oxygen
turbidity
pH
nitrates
3
Which organism uses nitrates from its fresh water habitat as a primary food source?
birds
algae
fish
4
Where is the majority of Earth's freshwater located?
ice
groundwater
oceans
lakes
5
What is the
best
description for winds pushing water away from shore along the coastline?
density currents
downwelling
upwelling
6
Which environmental factors would
most likely
impact the quality of a freshwater system?
surface tension and aquatic organisms
dissolved oxygen and pH
salinity and temperature
7
Which is the
best
reason for understanding local watersheds?
to decide where to place recreational parks
to help identify point source pollution
to help identify non-point source pollution
8
If digging a new well, which location would be
best
?
R
Q
S
T
9
Kelp forests depend on cold water. Which would yield the
most
stable ecosystem for them?
underwater volcanoes
hurricane activity
upwelling
10
Which
most likely
would cause diseases to be spread by polluted water?
runoff that contains fertilizers and pesticides
an oil spill from a ship carrying oil as cargo
dumping human waste in rivers and streams
11
How can humans
most directly
influence what happens in a river basin in a positive way?
by protecting soil, water, air, plants, and animals
by promoting public awareness through education
by draining swamps, wetlands, marshes, and bogs
by developing a task force for creating estuaries
12
Which
best
describes a significant benefit estuaries have on the environment?
Estuaries have ideal conditions for animal habitats.
Wildlife helps protect the land from erosion in estuaries.
Pollution is moved from rivers to oceans through estuaries.
Fishing industries thrive in and around tropical estuaries.
13
Which activity should be reported as illegal discharge into a storm drain?
a strong gust of wind blowing leaves into a storm drain
stormwater flowing into a storm drain after a heavy rain
a volunteer stenciling "Don't Dump" above a storm drain
someone dumping used motor oil into a storm drain
14
Which is true about
approximately
97% of Earth's water supply?
It is moving.
It is not moving.
It exists as salt water.
15
Runoff from the excessive use of nitrogen-based fertilizers affect aquatic ecosystems by
decreasing the predator population.
interfering with the water cycle.
causing aquatic animals to grow larger.
increasing the rate of algae growth.
16
Why are large numbers of ocean animals found in areas where upwelling occurs?
Nutrients are increased by the movement of water.
Oxygen is decreased by the movement of water.
Oxygen is increased by the movement of water.
Nutrients are decreased by the movement of water.
17
Which
best
explains why most drugs should not be disposed of in the sink or toilet?
The drugs may become less effective.
The drugs may not dissolve.
The drugs may enter the water cycle.
The drugs can clog drains.
18
Which
best
describes the relationship between temperature and dissolved oxygen in a lake?
A change in temperature has no effect on dissolved oxygen.
As temperature increases, dissolved oxygen increases.
As temperature increases, dissolved oxygen decreases.
As temperature decreases, dissolved oxygen decreases.
19
Which is an economic trade-off a community might make to maintain accepatable water quality?
providing tax incentives for industrial development
organizing meetings to prevent zoning restrictions
developing programs to educate farmers about pesticides
enforcing regulations to prevent point-source pollution
20
What is the
best
comparison of density currents and upwelling in the ocean?
Density currents are caused by wind; upwelling by El Nino.
Density currents are caused by temp.; upwelling by wind.
Density currents are caused by El Nino; upwelling by wind.
21
A home is downhill from a gas station with a leaking tank. How could its water be contaminated?
The family collects water in rain barrels left in the open.
The family buys bottled spring water.
Water is pumped to the home from a distant reservoir.
Groundwater is drawn up in buckets from a private well.
22
Where is the majority of Earth's freshwater found?
lakes
rivers
polar ice caps
ponds
23
How does upwelling in the ocean affect algae populations in the area?
The nutrients supplied cause algae to become abundant.
Algae grows slowly and forces marine life out to sea.
The current produced forces algae to relocate.
Algae becomes depleted as a result of colder temperatures.
24
Why do plant plankton not grow in the deep ocean?
because sunlight does not reach the deep ocean
because too many animals eat it before it can grow
because there are not enough dissolved gases to support it
25
Which
best
explains the poor productivity of the open ocean?
Large fish consume most of the phytoplankton.
Less photosynthesis because light doesn't penetrate deeply.
Phytoplankton is found at depth's where there is no light.
The temperature is too high for photosynthesis.
26
Which technology has allowed scientists to accurately map the ocean floor?
scuba
satellites
sonar
submersibles
27
Which factor
most
affects how water drains into local watersheds?
evaporation
precipitation
differences in elevation
28
The pie chart shows the distribution of freshwater resources on Earth. Which is greatest?
groundwater
frozen water
surface water
atmospheric water
29
Which are two factors that affect water quality?
odor and acidity
density and toxicity
texture and color
30
Which
best
explains why marine ecosystems are important to terrestrial organisms?
They provide humans with a rich source of food and income.
They support species that serve as animal food and fertilzer
They host species that make the base of the marine food web
They provide protection to coastlines and prevent erosion.
