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c2007., Pre-adolescent, Teacher Created Materials Pub. Call No: 535 Availability:1 of 1 At Location(s) Series Title: Sally Ride scienceSummary Note: Explains why light and sound are vital in observing the world, and describes how light is made; reflection, refraction, and absorption; how the eye and ears work; the Doppler effect; and the speed of sound; and includes instructions for a simple periscope.
