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Waves

Waves. Waves transport energy without transporting matter. Wave Station #1 Pencils in Beakers of Fluid.

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Waves

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  1. Waves

  2. Waves transport energy without transporting matter.

  3. Wave Station #1Pencils in Beakers of Fluid OIL: “Bends” more because the light has a slower average speed though the oil. Even though oil is less dense than water, the oil is more OPTICALLY DENSE. All transparent substances have there own optical density. When light bends going from one substance to another, we call this REFRACTION.

  4. Wave Station #2Wave Terminology Get ready for some notes.

  5. Equilibrium Wavelength (l): Distance for one complete wave. Period (T): Time for one complete wave. Frequency (f): # of waves for a given period of time. T = 1/f f = 1/T Velocity of a Wave depends on the medium in which it is traveling. v = f l

  6. Wave Station #3Pith Ball --Contrary to what you might think, the ball just moves up and down…IT DOES NOT TRAVEL WITH THE WAVE. --The only thing that moves forward with the wave is ENERGY. Even the water only moves up and down. The water is the substance (or MEDIUM) which carries the wave.

  7. Wave Station #4Reflection --When a wave is reflected, it simply changes its direction by bouncing off a barrier. --When the wave strikes the barrier, it bounces back at the same angle it came in at; this is known as the Law of Reflection. --Examples of waves reflecting are echoes, mirrors, and break walls. Barrier

  8. Wave Station #5Diffraction --Diffraction: The bending of a wave around a barrier or through an opening. --Larger wavelengths bend more then smaller. --AM Radio can be heard over larger distances because it can bend around objects due to its large wavelength. Large wavelength l Everything about the wave stays the same except its direction. Small wavelength l

  9. Wave Station #6Refraction Refraction: The bending of a wave when it travels from one medium to a new medium. Medium: Substance that carries the wave. The speed of a wave is dependent upon the medium from which it is traveling. Shallow Deep --When a wave refracts, the speed, wavelength(l), and direction change, but the frequency stays the same. This station will also explain Station #1: Pencils in the Beaker.

  10. Wave Station #7Dispersion White light really consists of all the colors of the rainbow (ROY G BIV). Dispersion: The breaking-up of white light into its component colors (the spectrum). This occurs because the different colors travel at different average speeds, thus bending different amounts. Rainbow

  11. Wave Station #8Swinging Sand Pendulum There are two separate motions in waves: the movement of the energy and the movement of the particles of the medium. Transverse Wave NRG Particles NRG Longitudinal Wave

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