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Science Monday, November 4 th (week 2)

Science Monday, November 4 th (week 2). Day: 10hr 36min Rise-6:40 Set-?:?? Moon: waxing crescent, 1% illuminated Objectives: I will describe how waves move energy. Warm Up!. Question: Draw and label the parts of a longitudinal wave. Important Information.

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Science Monday, November 4 th (week 2)

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  1. ScienceMonday, November 4th (week 2) Day: 10hr 36min Rise-6:40 Set-?:?? Moon: waxing crescent, 1% illuminated Objectives: I will describe how waves move energy.

  2. Warm Up! Question: Draw and label the parts of a longitudinal wave.

  3. Important Information Due Today: Bellwork Week 1 Homework Tonight: Get your report card slip signed! Upcoming Events: Early Release on Friday?

  4. Transverse Waves* • Crest- highest point on a wave • Amplitude- Volume of a wave (height of a wave) • As wave height increases, volume increases • Measured in Decibels • Trough- lowest point on a wave • Frequency- Pitch, high or low (length of a wave) • As wavelength increases, pitch decreases • Measured in Hertz

  5. Amplitude versus Frequency Amplitude • Which one will have the higher volume? Frequency • Which one will have the higher pitch?

  6. What can you hear? Decibels (dB): Volume • Normal Speech: 60dB • Library: 40dB • Close Whisper: 20dB • Jet Engine: 140dB • Loud Rock Music: 110dB • Subway Train: 100dB • Busy Street Traffic: 70dB • 120dB or above usually causes pain to the ear Hertz (Hz): Pitch • Young people can hear frequencies between 20-20,000 Hz • Dogs can hear frequencies that range from 67-45,000 Hz • As you age, your ability to hear high frequency sound decreases.

  7. Diagram of a Transverse Wave* CREST AMPLITUDE TROUGH WAVELENGTH

  8. Cool Waves! • http://paws.kettering.edu/~drussell/Demos/waves-intro/waves-intro.html • http://sunshine.chpc.utah.edu/labs/waves/wave_basics/waves.htm • http://paws.kettering.edu/~drussell/Demos/waves/wavemotion.html

  9. United Streaming • http://player.discoveryeducation.com/index.cfm?guidAssetId=75244603-66D0-4066-9608-85B309BD65FC&blnFromSearch=1&productcode=US • Then some PhET!

  10. Slinky, slinky!

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