MCA Grade 8 Science Practice Questions - Minnesota Comprehensive Assessment (MCA-IV) Science - Grade 8 Exam

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A graph shows stream velocity on the x-axis and the maximum sediment particle diameter carried by the stream on the y-axis. As stream velocity increases from 10 cm/s to 100 cm/s, the maximum particle size increases from fine sand to coarse gravel. What conclusion is best supported by these data?

Faster-moving stream water possesses greater kinetic energy, allowing it to transport larger sediment particles Stream water velocity is determined entirely by the size of the sediment particles on the riverbed Slower stream velocity increases the rate of sediment deposition for larger rocks Sediment particle diameter decreases automatically as water moves downstream

Correct Answer:

Faster-moving stream water possesses greater kinetic energy, allowing it to transport larger sediment particles

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