Item PT041001: New plate material forms where two plates pull apart.

Based on the diagram below, which letter indicates a place where new plate material is forming?

  1. At the boundary of the continent and ocean basin
  2. In the middle of the ocean basin
  3. At the boundary where the two plates are pulling apart
  4. No new plate material is forming anywhere shown in the diagram.

Distribution of Responses

Chart showing distrubtion of responses for Item PT041001

Percent of students responding correctly

Overall49%
Grades 6–847%
Grades 9–1251%
Male50%
Female48%
Primary Language is English49%
Primary Language is not English45%

View data table