GEOG 2050 Chapter : Geog2050
Document Summary
Above arctic circle= sun never sets/ sun never rises: view from the earth surface, sun"s altitude, angle between the sun and the horizon, sunrise/sunset= 0 degree, directly overhead= 90 degree. Angle changes with the degree and time of day: angle of incidence, same amount of energy spread out over a larger area. Reservoir behind hydroelectric dam (transfer of energy from one form to another) High pressure: kinetic= energy of motion, thermal = energy of heat of motion, electrical= charged particles, radiant energy (sun) light and other forms or radiation. Electrical power: radiant energy, radiant energy is emitted by all bodies with a temp above absolute zero (-273 c, radiant energy travels in electromagnetic waves that vary in wavelength and frequency frequency= waves per second. Decreasing frequency infared light used as heat: microwaves longer and used to cook, radio even longer, wien-planck"s law, the hotter the object, the shorter the wavelength.
