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Eighth Grade (Grade 8) Environmental Science Questions

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Grade 8 Environmental Science
Which of the following is a problem with using wind energy?
  1. air pollution
  2. limited locations for wind farms
  3. amount of land required for wind turbines
  4. none of the above
Grade 8 Environmental Science
The cleanest burning fossil fuel is
  1. natural gas.
  2. oil.
  3. petroleum.
  4. coal.
Grade 8 Environmental Science
What does it mean when a scientist says a lake has a high turbidity?
  1. The water has a lot of particles in it.
  2. The water is very clear.
  3. The water is very basic.
  4. The water can support many organisms.
Grade 8 Environmental Science
                are organisms that are used to assess ecosystem health.
  1. Turbidity
  2. Alkaline
  3. Nitrates
  4. Bio-indicators
Grade 8 Environmental Science
Which of the following could be used as biomass?
  1. corn cobs
  2. kerosene
  3. coal
  4. clay
Grade 8 Environmental Science
The energy contained in fossil fuels originally came from
  1. photosynthesis.
  2. heat from the center of Earth.
  3. the compression of fuel.
  4. pressurization.
Grade 8 Environmental Science
Why are large amounts of water used in nuclear power plants?
  1. to control radioactive waste
  2. to increase energy production
  3. to start nuclear reactions
  4. to cool the plant reactors
Grade 8 Environmental Science
Which of the following is a possible effect of high nutrient levels in a water system?
  1. Fish kills
  2. Increased water temperature
  3. Less algae
  4. Healthier fish
Grade 8 Environmental Science
The number of molecules (or atoms) of a substance in a mixture for every 1 million molecules (or atoms) in that mixture
  1. Parts per million
  2. Greenhouse effect
  3. Humidity
  4. Relative humidity
Grade 8 Environmental Science
What mode of transportation uses the most amount of fossil fuel per person?
  1. train
  2. school bus
  3. city bus
  4. car
Grade 8 Environmental Science
What can animals wastes and fertilizers make?
  1. sediment
  2. nitrates
  3. deltas
  4. dissolved calcium
Grade 8 Environmental Science
Define thermal pollution.
Grade 8 Environmental Science
The drilling for freshwater increases along a coastal area. What is a likely consequence of this action?
  1. an intrusion of salt water into aquifers
  2. the loss of water resources in estuaries
  3. the destruction of estuaries because of an increase in sea levels
  4. a decrease in salt concentration in inlet waterways
Grade 8 Environmental Science
Which of the following factors contribute to smog problems?
  1. mountains surrounding urban areas
  2. lots of sunlight
  3. high numbers of automobiles
  4. all of the above
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