warm up 8 cell membranes perform all the following functions except — a making nutrients for cells...
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Warm Up 8
Cell membranes perform all the following functions except —
A making nutrients for cells B holding cytoplasm within cells C regulating substances exiting cells D recognizing other cells
No Tuesday Morning Tutorial No Wednesday Tutorials at all
Thursday will have both morning and afternoon tutorial.
Sound WavesSound Waves
Sound Basics
Low frequency = low tone (bass) High frequency = high tone (treble) Sound Intensity is measured in Decibels
(dB).• Decibel is a logarithmic scale
• 10 dB = 10 times louder than 0 dB
• 20 dB = 100 times louder than 0 dB
Standing Wave (harmonics)Standing Wave (harmonics)
Created by wave interferenceCreated by wave interference Notes from a musical instrument (strings, Notes from a musical instrument (strings,
horns, reeds, piano, pipe organ, etc) are horns, reeds, piano, pipe organ, etc) are standing wavesstanding waves
Transverse and longitudinal waves Transverse and longitudinal waves produce standing wavesproduce standing waves
Doppler Effect
Produced when either the source or the observer is moving
Doppler Effect Math
Speed of Sound is considered constant
Wavelength is ____________ when sound is approaching
Frequency has to ___________.
Doppler Effect Math
Speed of Sound is considered constant
Wavelength is ____________ when sound is receding (moving away).
Frequency has to ___________.
Doppler Effect in the Real World
Doppler Radar Radar guns Red/Blue Shift in astronomy
Bow WavesShock Waves
Bow waves are produced by objects moving faster than the wave.
Shock waves are 3D bow waves.
Sonic BOOOOM!
Exit Ticket 5
Draw a standing wave with 4 nodes.
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