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What is Energy? Energy is the ability to A. Do Work B. Cause Change C. Speed D. Accelerate Two Types of Energy Are: Potential Energy •The energy an object has because of where it is or its shape. Kinetic Energy •The energy of motion. Forms of Energy Light Heat Electric Sound Atomic Chemical Mechanical Heat Energy • A form of energy whose source is the motion of molecules. When something is heated, the atoms or molecules in it begin to move faster. The hotter an object is, the quicker its molecules are moving. Heat can travel in 3 ways! Light Energy • Light is electromagnetic energy. It can travel through air and other transparent substances, and through empty space. Light travels at the fastest speed ever measured: 186,000 miles per second. Sound Energy • All sounds are made by something vibrating rapidly back and forth. Sound travels through air at a speed of 750 miles per hour. Electrical Energy Mechanical Energy • This is the energy of motion. The wind, cars moving, riding a bike, and even sound are all examples of mechanical energy. Chemical Energy Nuclear/Atomic Energy • This is the energy found inside the atom. The sun carries on a nuclear reaction all the time releasing amounts of energy. Nuclear power plants generate electricity.