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Ninth Grade (Grade 9) Environmental Science Questions

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Grade 9 Environmental Science
What is the layer of the atmosphere closest to Earth?
  1. Troposphere
  2. Stratosphere
  3. Mesosphere
  4. Thermosphere
Grade 9 Environmental Science
Grade 9 Environmental Science
Which of the following are the two main sources of oxygen in the air we breathe?
  1. volcanos and animals
  2. animals and phytoplankton
  3. green plants and volcanoes
  4. phytoplankton and green plants
Grade 9 Environmental Science
Match the different types of resource exploitation in Column A with their example in Column B.
__ Habitat Loss A. Pesticides and plant fertilizer spill into streams and rivers.
__ Deforestation B. Currently, old growth forest are being cut down in BC.
__ Contamination C. Fish populations have dramatically declined in the 21st century, mainly due to overfishing.
__ Overexploitation D. Humans take over large portions of the prairies to grow corn and wheat.
Grade 9 Environmental Science
Quarries are best defined as
  1. underground mines.
  2. open-pit mines.
Grade 9 Environmental Science
Two harmful gases that can pollute the air indoors are
  1. ozone and carbon dioxide.
  2. carbon dioxide and CFCs.
  3. nitrogen and sulfur.
  4. carbon monoxide and radon.
Grade 9 Environmental Science
Which of the following activities will help to decrease the amount of CO2 in the atmosphere?
  1. decreased use of solar power
  2. increased use of fertilizer
  3. decreased use of fossil fuels
Grade 9 Environmental Science
Grade 9 Environmental Science
The thick, brownish haze formed when certain gases in the air react with sunlight is known as
  1. the ozone layer.
  2. photochemical smog.
  3. a temperature inversion.
  4. the greenhouse effect.
Grade 9 Environmental Science
What is the source of the most energy given to Earth?
  1. Earth's Internal Heat
  2. Sun
  3. Wind
  4. Water
Grade 9 Environmental Science
Grade 9 Environmental Science
Grade 9 Environmental Science
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