PPT-Waves Objectives: Wave Motion

Interference of Waves Standing Waves Tsunamis Waves Frequency Wavelength Velocity Wave Motion A vibrating point drags its neighbours into motion As the motion spreads through space a wave forms. Typically, harmonic motion decreases in amplitude with time….this realistic model describes damped harmonic motion.. The damping effect is a result of friction and internal resistance of the system to further motion.. Typically, harmonic motion decreases in amplitude with time….this realistic model describes damped harmonic motion.. The damping effect is a result of friction and internal resistance of the system to further motion.. Periodic Motion – any repeated motion with regular time intervals. Simple Harmonic Motion – vibration about an equilibrium position in which a restoring force is proportional to the displacement from equilibrium . Vocabulary. Period: the time for one cycle of simple harmonic motion, or the time for a full wavelength to pass a position.. Frequency: the number of cycles, or the number of wavelengths passing a position, in one second. . . [3]. resonance . clocks – pendulum . springs . harmonic motion . mechanical waves . sound waves . The periodic wave relation. Wave interference. standing waves. beats. musical instruments. 1. Review. Waves & Sound. Important terms. PERIODIC. . MOTION:. Any motion that repeats itself in equal interval of time is known as periodic motion in equal intervals of time along same path back and forth.. Hooke’s Law. When a spring is stretched, a restoring force is created.. The restoring force is proportional to the displacement . The restoring force is always directed toward the equilibrium point. Explain how force, velocity, and acceleration change as an object vibrates with simple harmonic motion.. Calculate the spring force using Hooke’s law.. OBJECTIVES. What is periodic motion?. A repeated motion (e.g. pendulum swinging) that is back and forth over the same path.. Sound. The word ". sound. " may be . defined. in . two ways . (. objectively. and . subjectively. ).. . Objectively. , the . sound. is a . type of wave-motion taking place in a material medium. Get 1 full page and 1 half page of paper. Fold full sheet of paper. about 1-1.5” short of even. Insert half sheet in the middle. Staple . across . the fold. Pick up the top two pages and starting from the bottom, cut the top two . Periodic Motion. Motion that repeats in a regular cycle is called . periodic motion. . . The revolution of a planet about its sun is an example of periodic motion. The highly reproducible period (T) of a planet is also called its year.. - Jon . Kabat. -Zinn. Waves are moving . energy. !. Most waves wind-driven. Moving energy along ocean/air interface:. Wind main disturbing force. Boundary between and within fluids with different densities. A pulse is a single travelling disturbance.. A wave is periodic disturbances. Revised 1.27.2022 Some diagrams from Pearson Physics by Walker. Used with permission. Let’s take a look at waves in a ripple tank.. 18-1 Mechanical waves. In this chapter, we consider only . mechanical waves. , such as . sound waves. , . water waves. , and . the waves transmitting in a guitar’s strings.. . . Elastic mediums.