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