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7U3M1-3 Impact on Water Parker Flashcards | StudBud
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7U3M1-3 Impact on Water Parker
7U3M1-3 Impact on Water Parker
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Answers
1
Which substance is the strongest acid?
bleach
milk
lemon juice
black coffee
2
The four types of water pollution are chemical, biological, thermal, and eutrophication.
True
False
3
Which of these choices best expresses the concept of
water pollution
?
any pH change in the water
any concentration change in the water
any chemical that enters water by human activity
any change in water that causes harm to an organism
4
Pure water has a neutral pH. What is the pH of pure water?
6
9
7
8
5
Eutrophication can promote the growth of algae. Which of these actions is the best way to
reduce
eutrophication?
harvesting the algae
adding chemicals to change the pH of the water
increasing the nutrient concentration
reducing the nutrient level
6
Which human activity MOST LIKELY increased the amount of dissolved nutrients in the body of water between 2000-2005?
adding chemical fertilizers to water
discharging warm water into the body of water
burning fossil fuels
dumping litter in the water
7
Oceans are a source of fresh liquid water.
True
False
8
About 97% of Earth's water is salty, leaving only 3% as fresh water.
False
True
9
The term
potable
is sometimes used to describe water. Which of these words has the same meaning as
potable?
concentrated
contaminated
acidic
drinkable
10
A solution can be made by dissolving sugar in water. Which term describes how much sugar has been dissolved in water?
concentration
turbidity
pH
temperature
11
Which of these is the best example of a
point-source
pollution?
urbanization
artificial eutrophication
acid rain
waste discharge from a factory
12
Which of the following causes eutrophication?
thermal pollution
excessive nutrients
CFCs
acid rain
13
What federal government agency is responsible for setting standards for safe, clean drinking water?
Environmental Protection Agency (EPA)
Federal Bureau of Investigation (FBI)
Central Intelligence Agency (CIA)
National Aeronautics and Space Administration (NASA)
14
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.
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.
Freshwater was considered renewable, but now inexhaustible.
15
Organisms need polluted water for life and good health.
True
False
16
"Water is a common, yet vital, substance."
Which of these statements
supports
this fact about water?
One measure of water quality is its turbidity.
A fixed amount of water is available on Earth.
Water is a renewable resource.
Humans need water to live.
17
When fertilizers and pesticides make their way into water systems, which type of pollution has taken place?
thermal
chemical
eutrophication
biological
18
One measure of water quality is the cloudiness of the water. Which of these terms describes this measure?
pH
concentration
temperature
turbidity
19
What is the
main
purpose of digging a channel or building a dam on a river?
to accelerate the rate at which the soil erodes
to channel the river in a defined direction
to change the pH of the water
to change the temperature of the water
20
Which of the following is not a source of fresh liquid water?
aquifers
streams/rivers
groundwater
ice caps
21
Pollutants can enter a body of water at a specific, identifiable location. Which term describes this type of pollution?
biological pollutants
point-source pollution
nonpoint-source pollution
inorganic wastes
22
Which of these is considered a
nonpoint-source
of pollution?
storm-water runoff
runoff from coal mining
waste from a factory
public sewage treatment plants
23
When a power plant discharges warm water into a lake, which type of pollution takes place?
chemical
artificial eutrophication
thermal
biological
24
Farmland runoff into a river is an example of point-source pollution.
True
False
25
Which type of pollution is caused by humans dumping the remains of dead organisms into bodies of water?
biological
chemical
thermal
eutrophication
