- The earth is tilted at an angle.
- This angles allows the sun’s rays to touch every part of the earth’s surface in the course of a year, as it circles the sun.
- Without the tilt, the poles would accumulates enormous masses of ice, and the center of the earth would be so hot, we couldn’t stand it.
TEASER: what is the angle of inclination of the earth?
ANSWER: 23.5 degrees.