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 WC089001: Clouds form anywhere there is moist air that cools to form tiny water droplets.
Where, if anywhere, can new clouds form?
- New clouds cannot form anywhere. Wind pushes existing clouds from one place to another.
- Although clouds can be pushed from one place to another by wind, new clouds form only near factories and cities because clouds need pollution to form.
- Although clouds can be pushed from one place to another by wind, new clouds form only over lakes or oceans, because clouds need a body of water below them to form.
- New clouds can form wherever there is moist air that cools to form tiny droplets of water.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 1037 |
6–8 n = 680 |
9–12 n = 357 |
Male n = 480 |
Female n = 538 |
English n = 910 |
Other n = 104 |
|
| A. | 17% | 18% | 16% | 17% | 17% | 18% | 12% |
| B. | 29% | 26% | 34% | 28% | 29% | 29% | 28% |
| C. | 17% | 17% | 17% | 18% | 15% | 15% | 33% |
| D. | 37% | 40% | 32% | 36% | 39% | 39% | 28% |