Multiple Choice: Encircle the correct letter. 12. The earth spins on its a. Axis b. Invert 13. The earth's axis tilted b. 25.3⁰ c. Revolution degrees. a. 23.50 14. Rotation of the earth is what causes c. 30.20 d. 24⁰ d. Bounce a. The seasons b. Day and Night c. The tides d. A full moon 15. How does longer daytime affects the amount of solar energy received by the earth? a. The longer the day, the more energy will be received. b. The longer the day, the less energy will be received. c. The length of daytime does not affect the amount of energy received. d. None of the above.​