GG231 Chapter Notes - Chapter 10: Hail, Regina Cyclone, Frostbite
Document Summary
Ottawa valleys: warm air driven north by a high-pressure system centred over bermuda and low pressure trough located over mississippi river valley. Lessons learned: society dependent on electricity. Energy expressed in terawatts (tw: = to 1 million megawatts or 1 trillion watts total solar energy absorbed at earth"s surface is approx. Heats planet, evaporates water, and produces the differential heating that causes air masses to move. Global energy consumption by people is less than 0. 01% of this value . Types of energy about 13 tw per year: potential energy: stored energy. I. e. water held behind dam contains potential energy that may be used to produce electricity: kinetic energy: energy of motion. Heat transfer: conduction: transfer of heat through a substance by means of atomic or molecular interactions. Physically mixes water by creating a circulation loop = convection cell thunderstorms and in large-scale circulation of air away from the equator: radiation: wave-like energy emitted by a substance that possesses heat.
