Original Project
Weather and Climate I: Basic Elements
The pattern of the rise and fall of air temperature over a day and over a year at any given place on the surface…
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.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 1094 |
6–8 n = 631 |
9–12 n = 459 |
Male n = 489 |
Female n = 577 |
English n = 957 |
Other n = 94 |
|
| A. | 30% | 28% | 32% | 30% | 29% | 30% | 30% |
| B. | 29% | 31% | 27% | 31% | 28% | 29% | 32% |
| C. | 26% | 27% | 25% | 24% | 28% | 26% | 23% |
| D. | 15% | 14% | 16% | 15% | 15% | 15% | 15% |