transverse wave, a wave that has a high point called crest, sedimentary rock, forms from layers of sediments of particles of rock combined together, igneous rock, forms from cooling magma or lava, metamorphic rock, formed from heat and pressure, political map, shows the country and state boundaries, waves, carry energy from one place to another, street map, is used to find streets, roads, and highways, topographic map, a map that shows mountains and rivers, physical map, physical map, airport, hospital, food court or restaurant, restrooms, compass rose, used to know north, south, east, and west, map scale, is used to measure the distance in a map, crest, the high point of the wave, trough, is the name of the low point of the wave, wavelength, the distance between the crests, amplitude, the distance from the equilibrium line to the crest, equilibrium line, the horizontal line where the wave moves, superposition, when two waves meet or combine

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