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A delta forms when: |
a river slows and deposits sediment as it enters a lake or sea |
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Which of the following is true about how a stream erodes material? |
abrasion is concentrated on the upstream side of obstructions |
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The size of clasts that a stream can carry is primarily controlled by: |
the velocity and turbulence of the current |
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Which of the following sediment sizes is likely to be transported mostly on the bottom of the stream bed? |
pebbles and cobbles |
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Which of the following is true about transport of sediment in a stream? |
Sediment that is deposited within a stream bed is unlikely to be transported again. |
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Which of the following is a condition favoring deposition of sediment? |
a decrease in gradient of the stream |
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Which particles of sediment are most likely to be transported as suspended load? |
small, low density particles |
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Which of the following typically decreases downstream in a river? |
maximum sediment grain size |
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What does a profile of a river from its headwaters to its mouth typically show? |
a curved shape that flattens out downstream |
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Which of the following can influence a stream’s profile? |
all of these |
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Which of the following is NOT a common site for deposition of sediment? |
cutbank |
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