Basic Unit of Life Quiz
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Questions and Answers

What does sphericity refer to in the context of sediments?

  • The degree of uniformity of grain sizes of sediments
  • The density caused by the energy of the transporting medium
  • The sharpness of the sediment’s edges and corners
  • The degree by which a material approaches the shape of a sphere (correct)

    • What does sorting describe in relation to sediments?

  • The degree of uniformity of grain sizes of sediments (correct)
  • The degree by which a material approaches the shape of a sphere
  • The sharpness of the sediment’s edges and corners
  • The density caused by the energy of the transporting medium

    • What happens when the velocity of the transporting medium becomes low?

  • Lighter sediments are left behind and begin to be deposited
  • Sand and finer sediments are deposited first
  • Gravel and coarser particles are deposited first
  • Heavier sediments are left behind and begin to be deposited (correct)

    • How are gravel and coarser particles mostly transported?

    <p>By high energy current or streams with high competence</p> Signup and view all the answers

    What is the impact of excessive sedimentation on corals?

    <p>Sediments simply lie on top of corals, suffocating and killing them</p> Signup and view all the answers

    What type of pollution occurs when silt or clay dominates a body of water?

    <p>Siltation</p> Signup and view all the answers

    Study Notes

    Sediment Characteristics

    • Sphericity refers to the degree to which a sediment particle approaches a spherical shape.

    Sediment Transport

    • Sorting describes the distribution of sediment grain sizes in a deposit.

    Sediment Deposition

    • When the velocity of the transporting medium (e.g., water or wind) becomes low, sediments are deposited.

    Sediment Transport Mechanisms

    • Gravel and coarser particles are mostly transported by rolling or sliding along the bed of a river or ocean floor.

    Impact of Sedimentation on Corals

    • Excessive sedimentation can smother corals and impede light penetration, which is essential for their survival.

    Water Pollution

    • When silt or clay dominates a body of water, it can cause turbidity pollution, which reduces light penetration and affects aquatic life.

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    Description

    Test your knowledge about the fundamental building block of living organisms with this quiz. Choose the correct answer from the options provided.

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