ENVIRSC 1A03 : Environmental Science 1A03 Questions from end of lectures
12 Dec 2013
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Lecture 2 weather, climate, and earth"s atmosphere . The thermosphere has extremely high temperature, but a person exposed to it would rapidly freeze. The gas molecules in the thermosphere are very spread out, and so there is very little contact. This means that heat is poorly conducted in that environment. While it has a high temperature, the air is so thin that it cannot transfer that heat into a body. Not enough molecules to bump into, even if each is very high energy (the temperature). So your body would radiate heat faster than the surrounding air could replace it, and you freeze. We can experience seasons, and also el-nino. However we cannot experience global warming or an ice age in our lifetime. No long-term changes such as global warming and ice age. Lecture 3 atmospheric pressure and density . Pressurized cans of shaving cream advise users not to expose the product to excessive heat.
