Original Project
Plate Tectonics
The outer layer of the earth – including the continents and the ocean basins - consists of separate plates.
Item PT009001: Earth's plates are made of solid rock, and they can be seen where they are not covered by soil, loose rocks, or water.
What is TRUE about earth’s plates?
- The plates are made of solid rock that can never be seen because the plates are always deep within the earth.
- The plates are made of solid rock that can be seen where the plates are not covered by soil, loose rocks, or water.
- The plates are made of melted rock that can be seen where the plates are not covered by soil, loose rocks, or water.
- The plates are made of melted rock that can never be seen because the plates are always deep within the earth.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 781 | 3197 | 24% |
| Grades | |||
| 6–8 | 478 | 2063 | 23% |
| 9–12 | 294 | 1121 | 26% |
| Gender | |||
| Male | 418 | 1520 | 28% |
| Female | 357 | 1633 | 22% |
| Primary Language | |||
| English | 711 | 2908 | 24% |
| Other | 60 | 219 | 27% |