force - push or pull, friction - resistance encountered when one surface moves over another, energy - ability to do work, Energy transfer - move from one object to another, speed - motion of fast or slow, compression - the act of squeezing or pressing something to reduce its size, volume, or density,, Thermal energy - the energy an object has due to the fast, invisible movement of its tiny particles, Gravitational energy - the stored energy an object has held up high, Kinetic energy - the energy of motion, Sound energy - the energy we hear, Potential energy - stored energy an object has, Elastic energy - Objects can be strained or stretched, Electrical Energy - Energy is transferred when electric charges, motion - process of moving or being moved, phenomenon - a fact or situation that is observed to exist or happen,

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