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Item WE026004: Moving water continuously wears down earth's solid rock layer, which changes the shape of a valley even if you cannot see it happening.

Which of the following statements describes how long it takes for moving water to wear away the solid rock of a valley?

  1. It would take moving water about a hundred years or more to cause any change to the valley, no matter how small.
  2. It would take moving water millions of years or more to cause any change to the valley, no matter how small.
  3. Moving water continuously wears away the solid rock of a valley, which changes the valley even if you can’t see it happening.
  4. Moving water cannot wear away solid rock of a valley.
Distribution of Responses
Chart showing distrubtion of responses for Item 026004
Students Responding Correctly
Group Correct Total Percent
Overall 305 465 66%
Grades
  6–8 170 270 63%
  9–12 135 195 69%
Gender
  Male14222164%
  Female15523666%
Primary Language
  English27240667%
  Other224252%

View data table

NRC Framework
MS ESS2.C Water’s movements…cause weathering and erosion, which change the land’s surface features.
Notes
NGSS Performance Expectation MS-ESS2-2: Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales.