Original Project
Weathering, Erosion, and Deposition
Item WE031002: It takes many millions of years to wear away a mountain until it is almost flat.
How long would it take for water and wind to wear away the solid rock of a mountain that is now 5,000 feet high until it is only 50 feet high?
- About 50 years
- About 500 years
- Many millions of years
- Wind and water could never wear away the solid rock of a mountain that much.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 722 | 1166 | 62% |
| Grades | |||
| 6–8 | 423 | 713 | 59% |
| 9–12 | 299 | 453 | 66% |
| Gender | |||
| Male | 362 | 569 | 64% |
| Female | 350 | 571 | 61% |
| Primary Language | |||
| English | 649 | 1018 | 64% |
| Other | 59 | 112 | 53% |
- Notes
- See NGSS Performance Expectation MS-ESS2-2: Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales.