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Kinetic Energy and Potential Energy
出版Millmark Education, 2008-06
主題Science / Energy
ISBN16161864969781616186494
URLhttp://books.google.com.hk/books?id=-EhBlwEACAAJ&hl=&source=gbs_api
註釋Everything needs energy to do work or cause change. Most energy on Earth comes from the sun. There are two types of energy. Kinetic energy is the energy of motion. Potential energy is stored energy. Objects can have potential energy because of their position or condition. Energy can change from one form to another.