Original Project
Weather and Climate I: Basic Elements
Clouds and rain form as air cools and water vapor in the air condenses into water droplets.
Item WC070002: When air moves across a lake, its humidity may not increase because it may already be as humid as it can get.
When air moves over a lake, what will happen to the humidity of the air?
- If the air moving across the lake is warm, its humidity will increase no matter how humid it already is.
- The humidity of the air moving across the lake will increase no matter how warm it is or how humid it already is.
- The humidity of the air moving across the lake will stay the same no matter how warm it is or how humid it already is.
- You need more information to predict what will happen to the humidity of the air moving across the lake because it already may be as humid as it can get.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 611 | 2648 | 23% |
| Grades | |||
| 6–8 | 407 | 1657 | 25% |
| 9–12 | 204 | 989 | 21% |
| Gender | |||
| Male | 303 | 1220 | 25% |
| Female | 293 | 1375 | 21% |
| Primary Language | |||
| English | 539 | 2338 | 23% |
| Other | 58 | 247 | 23% |
- Disciplinary Core Ideas
- ESS2.C Water continually cycles among land, ocean, and atmosphere via transpiration, evaporation, condensation and crystallization, and precipitation, as well as downhill flows on land.
- Notes
- NGSS does not explicitly address the idea that there is a maximum amount of water vapor that air can hold at a given temperature.