EARTHSS 15 Lecture Notes - Lecture 2: Heat Transfer, Energy, Radiant Energy
8 Nov 2016
School
Department
Course
Professor
Document Summary
Readings: chapter 2, pp 9-10 on heat and light, and blue planet: introduction to energy (online) Energy flows from downhill from hot to cold. What is energy: defining energy is hard, energy is the capacity to perform work. Energy is a property of characteristic of matter that makes things happen, or, in the case of stored or potential energy, has the potential to make things happen. Without energy, nothing would ever change, nothing would ever happen. You might say energy is the ultimate agent of change, the mother of all change agents. Conversation of energy: energy can be stored, energy can move from one piece of matter to another piece of matter, energy can be transformed ffrom one type of energy to another type of energy. During all this moving and transforming, the total amount of energy never changes. Kinds of energy: radiant energy: light, kinetic energy: motion, gravitational potential energy- height, internal energy.
