https://padlet.com/polarons/vbk21szd40zr How do polar bears keep themselves warm? en-us 2018-01-15 08:40:09 UTC 2025-11-08 00:28:18 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/crane_yellow.png polarons https://padlet.com/polarons/vbk21szd40zr/wish/221369053 2018-01-15 08:40:51 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221369053 https://padlet.com/polarons/vbk21szd40zr/wish/221921814 This is as the skin of the polar bear is black, therefore it absorbs Infrared radiation the most effectively. Therefore, during the winter it is able to keep warm due to heat transfer by radiation.]]> 2018-01-17 00:29:48 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221921814 https://padlet.com/polarons/vbk21szd40zr/wish/221922370 The skin of the polar bear, under the layer of thick fur is actually black. Since it is black, it absorbs more heat in the form of infared radiation. The white fur is a poor emitter of radiation which traps the heat inside the polar bear. Thus , the white fur and the black skin help keep the polar bear warm.]]> 2018-01-17 00:34:21 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221922370 https://padlet.com/polarons/vbk21szd40zr/wish/221922404 Polar bears have thick layers of fur and fat. As fur and fat are poor conductors of heat, therefore, it loses less heat through conduction, thus keeping the polar bear warm in the winter.

]]> 2018-01-17 00:34:35 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221922404 https://padlet.com/polarons/vbk21szd40zr/wish/221922538 Polar bears are warm–blooded mammals, They retain their body heat because of a thick coat of fur as well as a thick layer of fat under their skin. Fur and fat are poor conductors of heat, or good insulators. A polar bear's fur is the first step in keeping warm.]]> 2018-01-17 00:36:10 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221922538 https://padlet.com/polarons/vbk21szd40zr/wish/221922972 Polar bears have thick fur which allows them to trap air within the fur . Air is a poor conductor of heat , which means heat is transferred slowly . Hence this keeps the polar bear warm . Also, polar bears have a layer of fat/blubber .Animals store extra digested food in the form of adipose tissue, which contains molecules called lipids. Adipose tissue has a relatively low thermal conductivity, which means that it does not transfer heat as well as other tissues and materials—such as muscle or skin. That way, it helps to insulate an animal's body.]]> 2018-01-17 00:41:23 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221922972 https://padlet.com/polarons/vbk21szd40zr/wish/221923201 2018-01-17 00:44:01 UTC https://padlet.com/polarons/vbk21szd40zr/wish/221923201