Flashcards on River and Coastal Landforms
River and Coastal Landforms Explained: Your Study Guide
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Fluvial landforms
38 cards
Card 1
Question: What is a meander?
Answer: A bend in a river.
Card 2
Question: What is lateral erosion?
Answer: Sideways erosion of the riverbank.
Card 3
Question: Why does a river meander in its middle course?
Answer: The gradient is less steep so the water slows down, promoting sideways erosion and deposition.
Card 4
Question: What is the main process in the mature (middle) stage of a river?
Answer: Lateral erosion.
Card 5
Question: What occurs on the inner bend of a meander: erosion or deposition?
Answer: Deposition (sand and shingle are deposited on the inside of the bend).
Card 6
Question: What occurs on the outer bend of a meander: erosion or deposition?
Answer: Erosion (sediment is eroded from the outer bank).
Card 7
Question: What valley shape is typical of the middle course of a river?
Answer: A U-shaped valley due to lateral erosion.
Card 8
Question: Where is the source of a river located?
Answer: The source is the starting point of the river, located in the mountains.
Card 9
Question: Where is the mouth of a river?
Answer: The mouth is the end of the river where it flows into the sea or ocean.
Card 10
Question: Define hydraulic action in river processes.
Answer: The force of moving water that helps erode the river channel.