L4_15.pptx - Topics for Today Third exam is Wednesday April...

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Topics for Today Third exam is Wednesday, April 20 Third exam will cover chapters 11-15. Waves (16-1) Wave speed on a stretched string (16-2) Power of a wave traveling on a string (16-3)
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Make waves on slinky. Mechanical waves: sound, water, seismic, stadium, … Bits of the material move back and forth, but not over long distances. Transmit energy over long distances, but not material. Can only exist within a material (medium) such as air, water, rock, people, … Speed of waves depends on the medium. Mechanical Waves
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Transverse waves – Medium moves perpendicular to wave Visible as movement from side to side Longitudinal waves – Medium moves parallel to wave Also called “compression waves” Visible as regions of high/low density Transverse vs Longitudinal Waves
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Quiz – What type of waves are sound? A – transverse B – longitudinal C – gnarly Transverse vs Longitudinal Waves
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Snapshot of a transverse wave Amplitude = maximum height of peaks.
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