What color is the polar bears skin?
A polar bear's skin is actually black. It's black so it can soak up as much of the sun's rays as possible. Polar bears have almost transparent fur over black skin. Reflection of the sunlight from the densely packed transparent hairs makes polar bears seem to be white. The bears' black skin absorbs heat from the sun. The seemingly-transparent fur is made up of hollow hairs called guard hairs. These air-filled guard hairs help transmit heat from the sunlight to the polar bear's black skin as a solar heat collector. In turn, the reflection stops the heat being lost from their black skin. Reply if you have any more questions. Good Luck, Cooper. (Please give a good review, I am doing this for a summer job!)
Jul 06, 2011 |