Which is true of earth’s poles? 1. they are physically closer to the sun. 2. they receive less direct sunlight than the equator. 3. they stay warmer than the equator. 4. they receive more solar energy than the equator.

 2. They receive less direct sunlight than the equator.

Different parts of the earth receives different amounts of sunlight. It depends upon the angle at which the light energy from the sun strikes the surface of the region. The sunlight strikes the surface of the pole which exhibit a slant surface because the sunlight hit with few rays and they are less focused at the slant area is less heated. Hence, 2. They receive less direct sunlight than the equator is the correct option.

4

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.