Original Project
Weathering, Erosion, and Deposition
The surface of the earth is changed as rock material is broken, carried, and dropped in new locations.
Item WE064001: A rock in a stream can get smaller by colliding with other rocks or by some of it dissolving in water.
How could a rock in a stream get smaller?
- A rock in a stream could get smaller by colliding with other rocks or by some of it dissolving in water.
- A rock in a stream could get smaller by colliding with other rocks, but not by some of it dissolving in water.
- A rock in a stream could get smaller by some of it dissolving in water, but not by colliding with other rocks.
- A rock in a stream cannot get smaller colliding with other rocks or by some of it dissolving in water.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1363 | 2514 | 54% |
| Grades | |||
| 6–8 | 777 | 1515 | 51% |
| 9–12 | 582 | 989 | 59% |
| Gender | |||
| Male | 680 | 1219 | 56% |
| Female | 657 | 1251 | 53% |
| Primary Language | |||
| English | 1220 | 2222 | 55% |
| Other | 102 | 221 | 46% |