FARE 1040 Lecture Notes - Lecture 2: Negative Feedback, Positive Feedback, Outgoing Longwave Radiation

• School: University of Guelph
• Department: Food, Agricultural and Resource Economics
• Course: FARE 1040
• Professor: Glenn Fox

Document Summary

A system is any ordered, interrelated set of things and their attributes linked by flows of energy and matter. Matter and energy go into a system and come out of a system (inputs and outputs) Ex. if looking at a lake the inputs are precipitation and runoff, rivers or streams, sediments from mountains, solar energy and wind energy. The outputs include; chemicals released by breakdown of rocks, evaporation, streams and rivers that drain this lake. Inputs going into the systems and outputs coming out. Outputs start to become inputs as well, which is feedback. As outputs come out some are lost and some are put back in. External processes and phenomena: ex. radiation from the sun. Internal processes that produce flows of heat and matter form below the earth"s crust: ex. plate tectonics and volcanoes. A lot of stars in a sagittarius arm becoming a band of light which is in the centre of our galaxy.