GEOG 101 Lecture Notes - Lecture 2: Electromagnetic Radiation, Solar Wind, Electromagnetic Spectrum
Document Summary
Solar energy to earth and the seasons. The sun is the dominant energy source for earth"s systems. Milky way galaxy 100,000 light years across. Our solar system 11 light hours across. Rocky planets: mercury, venus, mars and earth. Solar energy to earth and the seasons wind. Work: reaction of a force acting on a body. Fusion going on in the sun, helium and hydrogen and other stuff. Earth"s magnetic field, or magnetosphere, protects us from the constant solar. Charged particles from large solar flares interact with the gases in. Earth"s magnetic field causing magnetic storms which can lead to spectacular northern lights. Electromagnetic radiation is classed by its wavelength or frequency. All objects emit electromagnetic radiation if above 0 degrees kelvin (-273. 15 celsius) The rate (or intensity) at which an object emits electromagnetic radiation is a function of its temperature.
