Negative Feedback in Systems: Characteristics and Impact
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Questions and Answers

What is the impact of negative feedback in a river channel?

  • Enlarges the channel and reduces velocity (correct)
  • Increases erosion and reduces channel size
  • Constricts the flow and decreases velocity
  • Decreases erosion and increases channel size

    • How does positive feedback affect warming temperatures and global climate change?

  • Reduces the overall warming trend and stabilizes the planet
  • Amplifies temperature rise through reduced albedo effect (correct)
  • Stabilizes temperatures and maintains the albedo effect
  • Leads to cooling temperatures and increased ice/snow formation

    • Which characteristic best describes negative feedback in a system?

  • Increases response or stimulates processes
  • Encourages changes in the system
  • Drives the system towards extremes
  • Equals stability and enables self-regulation (correct)

    • What is a common consequence of unchecked positive feedback in a system?

    <p>Critical limits, instability, and disruption</p> Signup and view all the answers

    Which of the following best describes an example of negative feedback in a river channel?

    <p>Increased sediment deposition causing the river to slow down</p> Signup and view all the answers

    An example of positive feedback in warming temperatures and climate change is:

    <p>Melting ice caps leading to decreased reflectivity of Earth's surface</p> Signup and view all the answers

    What impact does negative feedback generally have on ecosystems?

    <p>It tends to maintain stability and prevent drastic fluctuations</p> Signup and view all the answers

    Which characteristics are associated with negative feedback processes?

    <p>Maintaining or restoring system equilibrium</p> Signup and view all the answers

    In the context of ecosystems, which of the following best describes an example of negative feedback?

    <p>Pollution levels decreasing due to the growth of aquatic plants</p> Signup and view all the answers

    Which scenario below is the best example of a positive feedback loop in relation to warming temperatures and climate change?

    <p>Warmer air temperatures causing permafrost to thaw and release more methane</p> Signup and view all the answers

    Which characteristics are associated with negative feedback systems?

    <p>Maintaining stability and counteracting deviations from a set point</p> Signup and view all the answers

    What feature best describes a positive feedback system?

    <p>Amplifying the initial change and leading to further escalation</p> Signup and view all the answers

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