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Across 5. a wave in which particle vibrate perpendicular to the direction of the flow of energy 7. the process of generating a new wave when two or more waves meet 10. the cyclical motion of an object about an equilibrium point 11. the region in a longitudinal wave in which the medium's paticles are father apart 13. a form of energy produced by rapidly vibrating objects detectable by sensory organs such as the ear 17. the minimum point of a transverse wave 18. the state of two identical waves that have the different phase shifts 19. the process of forming a wave with a large amplitude when two or more waves combine 20. the shape of a wave when graphed

Down 1. the material that permits the transmission of energy through vibrations 2. at any point the amplitude of two interfering waves is the sum of the amplitudesof the individuals waves 3. the maximum point of a transverse wave 4. the process of forming a wave with a smaller amplitude when two or more waves combine 6. the state of two identical waves that have the same phase shift 8. the property of a medium that returns to its original shape after being disturbed 9. the number of complete cycles that occur in unit time, usually 1 s; measured in hertz(Hz) 12. a wave in which particles vibrate parallel to the direction of the flow of energy 14. the transfer of energy through a material due to vibration 15. the region in a longitudinal wave in which the medium's particles are closer together 16. the maximum displacement of a wave from its equilibrium point