Item WE007002: Both the growth of plant roots and the freezing of water can break earth's solid rock layer.

Which of the following can break solid rock?

  1. Growth of plant roots but not movement of glaciers
  2. Movement of glaciers but not growth of plant roots
  3. Both growth of plant roots and movement of glaciers
  4. Neither growth of plant roots nor movement of glaciers can break solid rock.

Distribution of Responses

Chart showing distrubtion of responses for Item WE007002

Percent of students responding correctly

Grades 6–860%
Grades 9–1264%
Primary Language is English62%
Primary Language is not English55%

View data table