Which parts of the Sun's radiation are responsible for heating Earth's surface?
A) the radio and the ultraviolet
B) the X-ray and the gamma ray
C) the ultraviolet and the visible
D) the visible and the infrared
E) the infrared and the high energy particles
Question 2
You note that a particular star is directly overhead. It will be directly overhead again in:
A) 1 hour.
B) 12 hours.
C) 23 hours 56 minutes.
D) 24 hours.
E) 24 hours 4 minutes.