Item WE059001: Rain wears away very small amounts of the rock of a cliff whenever the rain falls.

How long would it take for rain falling on the solid rock of a cliff to wear away the rock, even by amounts so small that they cannot be seen?

  1. It takes at least a million years to wear away even very small amounts of the rock.
  2. It takes about a year to wear away even very small amounts of the rock.
  3. Rain wears away very small amounts of the rock of a cliff whenever the rain falls.
  4. Rain is not strong enough to wear away even a very small amount of the rock of a cliff.

Distribution of Responses

Chart showing distrubtion of responses for Item WE059001

Percent of students responding correctly

Overall37%
Grades 6–837%
Grades 9–1237%
Male36%
Female38%
Primary Language is English38%
Primary Language is not English32%

View data table