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WAVES

WAVES. Waves. Waves are oscillations that carry energy and information from one place to another. Examples of waves: light, sound, electricity in a wire, cell phone transmissions, ripple in a pond Two types of waves: transverse and longitudinal. transverse. Transverse Waves.

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WAVES

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  1. WAVES

  2. Waves • Waves are oscillations that carry energy and information from one place to another. • Examples of waves: light, sound, electricity in a wire, cell phone transmissions, ripple in a pond • Two types of waves: transverse and longitudinal

  3. transverse Transverse Waves • Transverse wave: has its oscillations perpendicular to the direction of the wave. The wave moves left to right and the oscillation moves up and down • Ocean waves are transverse waves

  4. longitudinal Longitudinal Wave • Longitudinal wave: has oscillations in the same direction the wave moves. • Sound is a longitudinal wave

  5. Pitch Frequency, amplitude, and wavelength parts to a wave • Frequency of a wave is a measure of how often it goes up and down and is measured in hertz (Hz) • Amplitude of a wave is the height of the wave above the level surface • Wavelength is the length of one complete cycle of a wave. Typically measured from crest to crest or trough to trough

  6. Speed • Speed describes how fast the wave moves • Speed is frequency (f) times wavelength (l) Wavelength (m) Speed (m/sec) Frequency (hz)

  7. What happens when a wave hits something? • Reflection: bounce off and goes in a new direction. • Refraction: bends as it crosses the edge Ripple Tank

  8. Diffraction: bends as it goes around a corner or through an opening • Absorption: amplitude gets smaller and smaller as it passes through the material

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