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Energy Vocabulary Words Energy – the ability to cause change in matter. The Law of Conservation of Energy states the Energy cannot be created or destroyed only changed. Gravitation - that force that pulls all objects in the universe toward one another. The Earth’s gravity pulls the Moon toward the Earth. The Sun’s gravity pulls all objects in the solar system toward the Sun . Kinetic Energy (KE) - Anything moving is kinetic energy. Moving energy such as Light, Sound, Thermal (heat) is kinetic energy. Potential Energy – (PE) The energy has because of its position or condition. Objects not moving, but are in a position to move have potential energy. Gravity, elastic (stretched rubber bands), chemical (food, fossil Fuels, batteries) Friction - a force that opposes or acts against motion when two surfaces rub ogether. Ice has very little friction that’s why it is slippery. Magnetism - the force of attraction (pulling) or repulsion (pushing) between poles of a magnet. Opposite poles of magnets attract - North Poles attract South Poles Like poles repel North Poles repel North Poles South Poles repel South Poles Magnetic Field - the magnetic force around a magnet. It’s strongest at the poles.