friction, a force between two surfaces, force, a push or pull, magnet, a piece of metal with a strong attraction to another metal object., magnetic, being attracted or pulled, Newton, Isaac ........ a scientist who discovered the laws of gravity, longitude, imaginary measuring line running from north to south globe, equator, an imaginary line around the middle of a planet, rhythm, repeated pattern of sound, lever, a bar on a pivot that can lift up, latitude, imaginary lines running from east to west

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