Original Project
Weather and Climate II: Seasonal Differences
The earth’s spherical shape causes differences in the intensity of sunlight and thus the amount of energy from…
Item CL083001: At all times during a day there is only one point where sunlight is striking the surface of the earth at a 90° angle.
Which of the following statements is TRUE about sunlight striking the Earth at a 90° angle (perpendicular to the surface of the Earth)?
- At all times during a day there is only one point where sunlight is striking the surface of the earth at a 90° angle.
- At most times during a day there is only one point where sunlight is striking at a 90° angle, but at some times sunlight strikes many points at a 90° angle.
- At most times during a day sunlight strikes only one point on Earth at a 90° angle, but at some times sunlight does not strike anywhere at a 90° angle.
- Sunlight does not strike any point on the surface of the Earth at a 90° angle during a day.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 325 | 1094 | 30% |
| Grades | |||
| 6–8 | 176 | 631 | 28% |
| 9–12 | 148 | 459 | 32% |
| Gender | |||
| Male | 148 | 489 | 30% |
| Female | 170 | 577 | 29% |
| Primary Language | |||
| English | 285 | 957 | 30% |
| Other | 28 | 94 | 30% |