Log In | Register

Item CL071002: Sunlight strikes the earth at a 90° angle at only one place at any given time.

Where and when is sunlight striking the earth at a 90° angle?

  1. At only one place on the sunlit side of the earth at any given time during a year
  2. At only one place on the sunlit side of the earth, but this happens only on the first day of summer
  3. At every place on the sunlit side of the earth, all year long
  4. At every place on the sunlit side of the earth, but only when it is noon at that place
Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 2139
6–8
n = 1182
9–12
n = 946
Male
n = 1056
Female
n = 1033
English
n = 1862
Other
n = 216
A. At only one place on the sunlit side of the earth at any given time during a year 28% 29% 27% 27% 29% 28% 28%
B. At only one place on the sunlit side of the earth, but this happens only on the first day of summer 29% 27% 31% 28% 30% 29% 30%
C. At every place on the sunlit side of the earth, all year long 21% 22% 20% 23% 19% 21% 20%
D. At every place on the sunlit side of the earth, but only when it is noon at that place 22% 21% 22% 22% 21% 22% 22%