Monday, October 22 nd Entry Task Take the next couple of minutes to study for your 16.1 Quiz...
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Transcript of Monday, October 22 nd Entry Task Take the next couple of minutes to study for your 16.1 Quiz...
Monday, October 22nd Entry Task Take the next couple of minutes to study for your 16.1 Quiz
Schedule:• 16.1 and 16.2 Notes
Homework:• 16.2 Read/RSG• 16.2 Vocabulary
Objective: I can understand that frequency determines pitch
Please have on your desk• 16.1 RKC/CE• 16.1 Vocabulary• 16.1 Questions
What is Sound?
• Sound is produced by vibrations.– A vibration is a complete back-and-forth
motion of an object.
This is how a speaker produces sound
Sound travels as longitudinal waves
• Sound waves travel in all directions away from their source.
• In a longitudinal wave, the particles vibrate back and forth along the same path that the wave travels.
• However, the air or other matter through which the wave is traveling does not travel with the sound waves. The particles of air only vibrate back and forth.
• Longitudinal waves consist of compressions and rarefactions.
Sound Waves Require a Medium!
• Sound and Media All sound waves require a medium (plural, media).
• A medium is a substance through which a wave can travel by vibrating particles in the material. Air is the most common medium of sound waves.
• There are no particles to vibrate in a vacuum. So, no sound can be made in a vacuum.
The speed of sound depends on the medium
• The speed of sound depends only on the medium in which the sound is traveling.
• Sound travels quickly through air, but it travels even faster in liquids and even faster in solids.
• Why? Think about how close together the particles are!
Pitch depends on frequency
• How high or low you perceive a sound to be is the PITCH of that sound.
• Humans can generally hear sounds that have frequencies between 20 Hz and 20,000 Hz.
Frequencies you can’t hear
• Frequencies below 20 Hz are called INFRASONIC.
• Frequencies above 20,000 Hz are called ULTRASONIC.
Section 16.2 Vocabulary
Do a vocabulary wheel for all 5 vocab words. Have at least 3 spokes
Tuesday, October 23rd Entry Task
Answer the following questions using full sentences, IQIA
1.Describe what is different about the sound waves produced by a low note and a high note on a musical instrument.2.Explain why two people singing the same pitch do not sound exactly the same3.How does perceived pitch change as a sound source passes
Schedule:• Resonance and Frequency • Read/RSG 16.3
Objective: •I can understand resonance and that intensity determines loudness
Homework• 16.3 Vocab- do a word
magnet for the terms
Please have on desk:• 16.2 RSG• 16.2 Vocabulary
ER- Wednesday, October 24th Entry Task
Start working on the worksheet that is on the chair. DO NOT USE A BOOK
Schedule:• IPOD article
Homework:• Sound Intensity WS
Objective: I can understand the effect of high intensity sounds
Please have on your desk:
• 16.3 RSG and 16.3 vocabulary
Thursday, October 25th
Entry Task Get your notebook out ready to take notes
Schedule:• 16.4 Notes
Homework• 16.4 Read/RSG • 16.4 Vocabulary- Do any
STRATEGY you want
Objective: I can understand that sound has many uses
Please have on desk:• IPOD article questions• Sound Intensity WS
Echolocation
• Bats send out ultrasound waves and interpret the returning sound waves. They find their meals of flying insects this way.
Sonar
• “Sound Navigation and Ranging” Instruments that use echolocation to locate objects such as submarines, sunken ships, and schools of fish. It is also used in sea floor mapping.
Medical Uses
• Ultrasound can be used to break up kidney stones, clean medical equipment, and see inside the body.
Uses of Sound
• Sound waves can produce music.
Stringed instruments
1. Look at the diagram on page 541. Describe how a stringed instrument produces music.
Wind instruments
2. Look at the diagram on page 541. Describe how a wind instrument produces music.
Percussion instruments
3. Look at the diagram on page 541. Describe how a percussion instrument produces music.
Uses of Sound
• Sound can be recorded and reproduced.
The Telephone
4. Read page 542. Explain how a telephone works when you call a friend to talk to him/her.
Recorded sound
5. Read page 543. Explain how sound can be recorded and reproduced.
16.4 Review Questions
• Answer questions 1-6 from page 543
• Do this in your notebook
• Use full sentences, IQIA.
Friday, October 26th
Entry Task
Do the following using full sentences, IQIA.
1. Explain how a sound wave is produced.2.Explain which mediums sound waves travel through the fastest and why3.Explain how frequency determines pitch4.Explain how intensity determines loudness5.Explain 3 of the many uses of sound
Schedule:• Bill Nye-Sound• Sound Vocabulary
Practice
ObjectiveI can understand basic information about sound
Homework: • Chapter 16 test on Tuesday
Please Have on Desk:• 16.4 Vocabulary