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Human Environmental Impacts (Grade 9)

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Human Environmental Impacts

Nitrogen oxides from burning gasoline turn to this when they mix with water vapor in the atmosphere.
  1. Sulfur dioxide
  2. Sulfuric acid
  3. Nitric oxide
  4. CFCs
Most air pollution comes from                     .
  1. natural sources
  2. burning fossil fuels
  3. fires
  4. paint
Acid rain is formed when
  1. fossil fuels are dumped in large bodies of water, like rivers.
  2. fossil fuels react with pollutants that are called oxides.
  3. oxides of fossil fuels react with water vapor in the atmosphere.
  4. rain does not fall for a very long period.
The trapping of heat near Earth's surface is called
  1. the greenhouse effect.
  2. the ozone cycle.
  3. emissions.
  4. air pollution.
Most water pollution is caused by                   .
  1. volcanic eruptions
  2. sediments
  3. human activities
  4. droughts
What human activity has caused the greatest percentage of extinctions?
  1. pollution
  2. hunting
  3. habitat alteration
  4. pest control
What are some of the primary causes of global warming?

Which of the following is NOT an advantage of hydropower systems?
  1. They do not release air pollution.
  2. They last longer than fossil fueled power plants.
  3. They provide flood control.
  4. They change the flow of rivers.
Envision the following scenario:

It is a warm spring day. Ice no longer covers the ponds, the ground has thawed, and rivers are flowing rapidly with snowmelt from mountains. A tanker truck carrying a hazardous liquid material winds its way through a mountain pass near point F on the diagram below. The truck hits an unexpected frost heave and overturns onto the embankment on the side of the road, next to the river. Although no one was injured, the tank of the truck breaches, releasing its contents onto the ground and into the river.

Water Cycles


Write a paragraph describing the potential pathways of contamination from the spill based on the scenario and diagram and assuming the spill is not contained. You may draw arrows indicating flow on the diagram and reference letters already in place. Be sure to discuss which water bodies on the diagram may be affected, the order in which they would be contaminated, and the relative contaminate concentration in each water body. Determine whether this is an example of point source or nonpoint source pollution and defend your answer.

What is the term for the natural ability of Earth's atmosphere to trap energy from the sun?
  1. global warming
  2. greenhouse effect
  3. biological magnification
  4. ozone depletion

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