1. Explain how the earth's surface is heated unevenly.

the earth is covered with primarily two completely different substances, land and water which heat and cool at different rates. / the earth is a sphere, with the equator heated more intensely than the poles. / the earth is tilted on its axis, which creates seasonal differences at certain latitudes / the earth rotates on its axis, which means at any one time, half the earth is in day and the other in night.