6 Questions
What does sphericity refer to in the context of sediments?
The degree by which a material approaches the shape of a sphere
What does sorting describe in relation to sediments?
The degree of uniformity of grain sizes of sediments
What happens when the velocity of the transporting medium becomes low?
Heavier sediments are left behind and begin to be deposited
How are gravel and coarser particles mostly transported?
By high energy current or streams with high competence
What is the impact of excessive sedimentation on corals?
Sediments simply lie on top of corals, suffocating and killing them
What type of pollution occurs when silt or clay dominates a body of water?
Siltation
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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