Question 1
Base your answers on the diagram and data table below. The diagram shows the equipment used to determine the factors affecting the rate of erosion in a stream. The data table shows the time it took a 10-gram sample of quartz sand to move 100 centimeters down the rain gutter under various conditions.
What is the relationship between the water velocity and the rate of erosion?
(1 point)
Responses
If the water velocity increases, the rate of erosion increases.
If the water velocity increases, the rate of erosion increases.
If the water velocity remains constant, the rate of erosion increases.
If the water velocity remains constant, the rate of erosion increases.
If the water velocity remains constant, the rate of erosion decreases.
If the water velocity remains constant, the rate of erosion decreases.
If the water velocity decreases, the rate of erosion increases
If the water velocity decreases, the rate of erosion increases
Question 2
In this experiment, the water velocity could be increased by(1 point)
Responses
lowering the flexible hose
lowering the flexible hose
widening the rain gutter
widening the rain gutter
decreasing the slope of the rain gutter
decreasing the slope of the rain gutter
increasing the amount of water from the faucet
increasing the amount of water from the faucet
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1 answer
Question 1: What is the relationship between the water velocity and the rate of erosion?
The correct response is:
If the water velocity increases, the rate of erosion increases.
Question 2: In this experiment, the water velocity could be increased by
The correct response is:
increasing the amount of water from the faucet.
Increasing the amount of water would generally increase the flow rate (velocity) of the water in the system.
