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
![Chart showing distrubtion of responses for Item WC083001](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=339933|76A4FB|76A4FB|76A4FB&chds=0,100&chd=t:30,29,26,15&chxl=0:|A|B|C|D&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=WC083001-dist.png)
- 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% |