GEG-1 Lecture Notes - Lecture 21: Robustness, Positive Feedback, Scientific Notation
Document Summary
Thresholds- big change in system after small change in inputs or outputs sometimes called tipping point. Feedback- change one part of the system causes another part of the system to change, but then change in the second causes change in first due to negative feedback. We change temp with body heat then ac changes it back. Positive feedback- systems keep changing and going out of equilibrium. Ice age- cooler- more snow- sunlight reflected- cooler. How will a system respond to a change of inputs or out-put"s. ex. Predicting system resilience requires thorough understanding of a system. Earth is a closed system, no change is mass. Conclusions- this class is going to deal with systems and how they operate. The radius of earth is about 6400 km. The moon is about 400 000 km away from us and the sun is about 150 million km away from us.
