Maslow's Hierarchy of Needs. Definition. Maslow's hierarchy of needs is a theory of motivation and personality developed by the psychologist Abraham H. Maslow (1908â1970). Maslow's hierarchy explains human behavior in terms of basic requirements for survival and growth.
When you use ice to cool the ingredients for ice cream, the energy is absorbed from the ingredients and from the outside environment (like your hands, if you are holding the baggie of ice!).
Heat is active energy and cold is the absence of energy. Thermodynamics, in this analogy, equates the water level with heat energy (thermodynamics). All the energy in the system (in the universe) is headed for the Cosmic Sink. It is all trying to reach a uniform and colder level.