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science vocabulary

reflection the bouncing back of light rays from a surface
refraction the bending of light rays as they move from one material into another material
lens a curved piece of clear glass or plastic that bends light rays
convex lens a lens that is thicker in the center and thinner at the edges, a shape that bends light inward
concave lens a lens that is thinner in the center and thicker at the edges, a shape that bends light outward
pitch how high or low a sound is
volume the loudness of a sound
waves a repeating up-and-down or back-and-forth movement of matter
wave length the distance between one wave crest and the next crest or between one wave trough and the next trough
wave frequency the number of waves that move past a point in a certain amount of time
Created by: brunsoncj