1. Monday, October 22 nd 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

2. What is Sound? Sound is produced by vibrations. –A vibration is a complete back-and-forth motion of an object.

3. This is how a speaker produces sound

4. 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.

5. 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.

6. 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!

7. 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.

9. Frequencies you can’t hear Frequencies below 20 Hz are called INFRASONIC. Frequencies above 20,000 Hz are called ULTRASONIC.

10. Section 16.2 Vocabulary Do a vocabulary wheel for all 5 vocab words. Have at least 3 spokes

11. Tuesday, October 23 rd 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 same 3.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

12. ER- Wednesday, October 24 th 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

13. Thursday, October 25 th 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

14. Echolocation Bats send out ultrasound waves and interpret the returning sound waves. They find their meals of flying insects this way.

15. 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.

16. Medical Uses Ultrasound can be used to break up kidney stones, clean medical equipment, and see inside the body.

17. Uses of Sound Sound waves can produce music.

18. Stringed instruments 1. Look at the diagram on page 541. Describe how a stringed instrument produces music.

19. Wind instruments 2. Look at the diagram on page 541. Describe how a wind instrument produces music.

20. Percussion instruments 3. Look at the diagram on page 541. Describe how a percussion instrument produces music.

21. Uses of Sound Sound can be recorded and reproduced.

22. The Telephone 4. Read page 542. Explain how a telephone works when you call a friend to talk to him/her.

23. Recorded sound 5. Read page 543. Explain how sound can be recorded and reproduced.

24. 16.4 Review Questions Answer questions 1-6 from page 543 Do this in your notebook Use full sentences, IQIA.

25. Friday, October 26 th 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 why 3.Explain how frequency determines pitch 4.Explain how intensity determines loudness 5.Explain 3 of the many uses of sound Schedule: Bill Nye-Sound Sound Vocabulary Practice Objective I can understand basic information about sound Homework: Chapter 16 test on Tuesday Please Have on Desk: 16.4 Vocabulary