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)?

  1. At all times during a day there is only one point where sunlight is striking the surface of the earth at a 90° angle.
  2. 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.
  3. 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.
  4. 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 CL083001

Percent of students responding correctly

Overall30%
Grades 6–828%
Grades 9–1232%
Male30%
Female29%
Primary Language is English30%
Primary Language is not English30%

View data table