Original Project
Plate Tectonics
When two plates are pulling apart, melted rock material rises up between the plates, creating new plate material…
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?
- At the boundary of the continent and ocean basin
- In the middle of the ocean basin
- At the boundary where the two plates are pulling apart
- No new plate material is forming anywhere shown in the diagram.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1535 | 3156 | 49% |
| Grades | |||
| 6–8 | 963 | 2038 | 47% |
| 9–12 | 562 | 1105 | 51% |
| Gender | |||
| Male | 748 | 1504 | 50% |
| Female | 767 | 1610 | 48% |
| Primary Language | |||
| English | 1411 | 2875 | 49% |
| Other | 96 | 213 | 45% |