Answer: Winter shadows are long because sunlight is spread out. The Sun appears low in the sky even at noon. Summer shadows are short because the light is concentrated in a small area.
During the winter the suns rays are not very strong due to the tilt of Earth's Axis. So if you live in America it is cold in the winter and hot in the summer in most places. The shadows of the sun are greatest at winter due to the temperature drop then during the summer
