A&O SCI 1 Lecture Notes - Lecture 2: Health Threat From Cosmic Rays, Scientific Method, Boiling Point
2 Aug 2018
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Document Summary
Temperature : measure of the internal heat energy of a substance. Internal heat energy - molecules that make up all matter are in constant random motion, which generates heat (the reason any substance has a temperature) The more molecules that make up a substance move the higher its temperature. Boiling point of water : 100 c = 373. 15 k. Freezing point of water : 0 c = 273. 15 k. Kelvin scale has temperature of zero associated with no molecular motion (most commonly used in science) Any location on earth is specified by latitude and longitude : Climate scientists speak of 4 latitude zones: Mid-latitudes (35n - 60n, 35s - 60s) High-latitudes (60n - 90n, 60s - 90s) The pillars of science: observation & theory. Idea that truth can be derived from observation of the natural world was revolutionary (when it was first proposed nearly 500 years ago) Key features of the planet"s temperature distribution:
