Texas Instruments
Texas Instruments: Insulating Against the Cold
In this activity, students use a Temperature Sensor to test the insulating efficiency of different samples of fabric. They examine the properties that make a fabric a better insulator. They extend this to understand how animals adapt to...
Science Made Simple
Science Made Simple: How Do Animals Spend the Winter?
Use this site to learn how animals use hibernation, adaptation, and migration to overcome the difficulties of winter.
Smithsonian Institution
National Museum of Natural History: American Mammals: Arctic Fox
An animal that does not begin to shiver until temperatures reach -70 C, the arctic fox is one of the most superbly cold-adapted mammals. Its dense, multi-layered coat, which is several inches thick during winter, provides excellent heat...