Date post: | 31-Dec-2015 |
Category: |
Documents |
Upload: | charlotte-mcdowell |
View: | 248 times |
Download: | 6 times |
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