HAN 200 Chapter Notes - Chapter 2: Food Energy, Adenosine Triphosphate, Radiant Energy
17 Aug 2016
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* differentiate between matter and energy and between potential energy and kinetic energy. Matter: anything that occupies space and has mass; with some exceptions: it can be seen, smelled, and felt. Mass: equal to the amount of matter in an object and remains constant wherever the object is. Energy: the capacity to do work, or to put matter into motion. Less tangible than matter because it has no mass, does not take up space, and we can measure it only by its effects on matter. The greater the work done the more energy is being used doing it. All living things are composed of matter and they all require energy to grow and function. Life: the release and use of energy by living systems. Ke vs. pe: kinetic energy: energy in action. Evidence in constant movement of atoms: the tiniest particles of matter, as well as in larger objects such as a bouncing ball.
