Item WE018003: Moving water continuously wears down earth's solid rock layer whenever water is moving over the rock, even if you cannot see it happening.

How long does it take for moving water to wear down earth’s solid rock layer?

  1. Whenever water is moving over solid rock, a little bit of the rock is worn down even if you can’t see it.
  2. Moving water can wear down solid rock, but it takes about ten years or more to cause any change, no matter how small.
  3. Moving water can wear down solid rock, but it takes millions of years or more to cause any change, no matter how small.
  4. Moving water cannot wear down solid rock.
Distribution of Responses
Chart showing distrubtion of responses for Item WE018003
Students Responding Correctly
Group Correct Total Percent
Overall 657 1385 47%
Grades
  6–8 391 869 45%
  9–12 264 511 52%
Gender
  Male32768648%
  Female31967148%
Primary Language
  English582122747%
  Other6112549%

View data table