CCNY PHYS 45400 - Spring 2026
Feb 4, 2025

Name _________________________

  1. It takes 365 days for the Earth to go around the Sun. How many degrees does earth move along its orbit in 1 day.

  2. It takes 24 hours for the sun to get from its highest point in the sky one day to its highest point the next day. How many degrees does Earth rotate around its own axis during this 24 hour period? (360°, < 360°, or > 360°)
  3. How long does it take Earth to rotate exactly 360° ? (24 hr, < 24h, or > 24 hr;)
  4. How do you expect the ratio of Sideral / Solar day. (0.997 for Earth) to change based on the distance between the Sun and the Planet that is orbiting?