Catastrophic Events

7 Questions

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Catastrophic Events

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Questions and Answers
  • 1. 
    Tornadoes can negatively affect an ecosystem when -
    • A. 

      The saltwater they bring kills burrowing insects

    • B. 

      Their strong winds uproot many of the important plants.

    • C. 

      The rise in water level they produce introduces harmful salt.

    • D. 

      They bring higher temperatures favored by birds

  • 2. 
    In a freshwater marsh ecosystem that experiences a hurricane, which of the following would be the most likely effect?
    • A. 

      A loss of plant life from saltwater brought in by storm surge

    • B. 

      More burrowing animals living in the deeper soil layers

    • C. 

      Death of most organisms due to fires from lightning strikes

    • D. 

      Increase in diversity of organisms due to more competition

  • 3. 
    Which of the following correctly matches a catastrophic event with its effect on an ecosystem?
    • A. 

      Which of the following correctly matches a catastrophic event with its effect on an ecosystem?

    • B. 

      A hurricane can kill plants with lava flows

    • C. 

      A thunderstorm’s lightning can start forest fires

    • D. 

      A tornado can move seawater onto land by creating storm surge

  • 4. 
    Hurricanes can harm plants in coastal ecosystems in places such as Galveston in all of the following ways EXCEPT –
    • A. 

      High winds knocking down tall trees

    • B. 

      Soil washing away due to high water caused by storm surge

    • C. 

      Clouds blocking out the sun

    • D. 

      Storm surge moving saltwater onto the land

  • 5. 
    Which of the following is an example of how flood waters can impact ecosystems?
    • A. 

      Removing leaves from tall trees

    • B. 

      Increasing the nutrients in the soil

    • C. 

      Preventing photosynthesis in plants

    • D. 

      Sweeping fish and other aquatic animals out of their habitats

  • 6. 
    Which change would most likely be observed in the nonliving parts of an ecosystem after a flood?
    • A. 

      Increase in oxygen in the atmosphere

    • B. 

      Increase in water pollution

    • C. 

      Less sunlight reaching ground level

    • D. 

      Less soil erosion

  • 7. 
    The Saffir-Simpson Scale shown here is used to rate the intensity of hurricanes.  Trees with deeper roots will only be knocked down by winds of 120 miles per hour or higher.  If a hurricane is able to knock down one of these types of trees, we can predict that the pressure associated with this hurricane would be –
    • A. 

      No higher than 920 millibars.

    • B. 

      In the range of 950 millibars or less

    • C. 

      Between 979 and 965 millibars

    • D. 

      At least 980 millibars, probably higher