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5-3 Impact on Water Flashcards | StudBud
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5-3 Impact on Water
5-3 Impact on Water
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1
About 97% of Earth's water is salty, leaving only 3% as fresh water.
False
True
2
A solution can be made by dissolving sugar in water. Which term describes how much sugar has been dissolved in water?
turbidity
temperature
concentration
pH
3
Farmland runoff into a river is an example of point-source pollution.
False
True
4
What federal government agency is responsible for setting standards for safe, clean drinking water?
Central Intelligence Agency (CIA)
Federal Bureau of Investigation (FBI)
National Aeronautics and Space Administration (NASA)
Environmental Protection Agency (EPA)
5
The term
potable
is sometimes used to describe water. Which of these words has the same meaning as
potable?
drinkable
concentrated
contaminated
acidic
6
Pure water has a neutral pH. What is the pH of pure water?
7
9
6
8
7
"Water is a common, yet vital, substance."
Which of these statements
supports
this fact about water?
Water is a renewable resource.
Humans need water to live.
One measure of water quality is its turbidity.
A fixed amount of water is available on Earth.
8
One measure of water quality is the cloudiness of the water. Which of these terms describes this measure?
pH
turbidity
concentration
temperature
9
When a power plant discharges warm water into a lake, which type of pollution takes place?
artificial eutrophication
chemical
thermal
biological
10
The four types of water pollution are chemical, biological, thermal, and eutrophication.
True
False
11
Organisms need polluted water for life and good health.
False
True
12
Which substance is the strongest acid?
lemon juice
bleach
black coffee
milk
13
Oceans are a source of fresh liquid water.
False
True
14
Which of the following is not a source of fresh liquid water?
groundwater
streams/rivers
aquifers
ice caps
15
Which of the following causes eutrophication?
CFCs
acid rain
thermal pollution
excessive nutrients
16
Which type of pollution is caused by humans dumping the remains of dead organisms into bodies of water?
eutrophication
chemical
biological
thermal
17
When fertilizers and pesticides make their way into water systems, which type of pollution has taken place?
biological
eutrophication
chemical
thermal
18
Which of these is considered a
nonpoint-source
of pollution?
public sewage treatment plants
waste from a factory
storm-water runoff
runoff from coal mining
19
Pollutants can enter a body of water at a specific, identifiable location. Which term describes this type of pollution?
biological pollutants
inorganic wastes
nonpoint-source pollution
point-source pollution
20
Which of these is the best example of a
point-source
pollution?
acid rain
waste discharge from a factory
urbanization
artificial eutrophication
21
Which of these choices best expresses the concept of
water pollution
?
any chemical that enters water by human activity
any concentration change in the water
any change in water that causes harm to an organism
any pH change in the water
22
What is the
main
purpose of digging a channel or building a dam on a river?
to change the temperature of the water
to channel the river in a defined direction
to change the pH of the water
to accelerate the rate at which the soil erodes
23
Eutrophication can promote the growth of algae. Which of these actions is the best way to
reduce
eutrophication?
reducing the nutrient level
increasing the nutrient concentration
adding chemicals to change the pH of the water
harvesting the algae
24
Which human activity MOST LIKELY increased the amount of dissolved nutrients in the body of water between 2000-2005?
adding chemical fertilizers to water
dumping litter in the water
discharging warm water into the body of water
burning fossil fuels
25
Humans need fresh, clean water to survive. Which of these statements is TRUE about fresh water?
An unlimited amount of freshwater is available on Earth.
Freshwater was considered renewable, but now inexhaustible.
The global population is decreasing, and people are using less fresh water.
In some places, freshwater is being used up faster than it can be replaced.
