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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
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 3156
6–8
n = 2038
9–12
n = 1105
Male
n = 1504
Female
n = 1610
English
n = 2875
Other
n = 213
A. At the boundary of the continent and ocean basin 17% 17% 18% 17% 17% 17% 14%
B. In the middle of the ocean basin 21% 22% 17% 20% 21% 20% 25%
C. At the boundary where the two plates are pulling apart 49% 47% 51% 50% 48% 49% 45%
D. No new plate material is forming anywhere shown in the diagram. 14% 14% 14% 13% 15% 14% 16%