Introduction
Sound and Hearing
What is sound?
How do we measure it and how does the human ear collect sound waves?
Task
Work through each section, following the instructions.
Use the webpages to answer the questions.
You can also search other websites to add to your learning.
Process
Your answers can be presented in any format, eg Word document, PowerPoint, Pages...
1a. What is sound?
- define sound, include a diagram of a sound wave.
- define the terms pitch and volume
Start by viewing these websites:
http://scienceprojectideasforkids.com/2010/sound-pitch-loudness/ Follow the link embedded in the diagram for greater detail
http://www.physicsclassroom.com/Class/sound/u11l1c.html Answer the question at the bottom of the page and click on the next chapter for info on pitch
https://www.youtube.com/watch?v=px3oVGXr4mo
1b. How does the ear work?
- list the structures and function in the human ear, include an image
- create a flow diagram explaining how sound is transmitted from outside the ear to the brain
Use these websites
** Some sites require a Flash player and will not work on iPads or devices without Flash capability**
http://www.childrensuniversity.manchester.ac.uk/interactives/science/br… Try the quiz after the animation
https://www.hearing.com.au/how-we-hear/
http://www.physicsclassroom.com/class/sound/Lesson-2/The-Human-Ear
2a. How is sound measured?
- state the units for measuring volume of sound
- include a volume scale in your presentation
- clearly rank iPod volume on the scale
Read the articles and look for the volume scales
http://www.dangerousdecibels.org/virtualexhibit/6measuringsound.html
http://www.gcaudio.com/resources/howtos/loudness.html
http://www.physicsclassroom.com/class/sound/Lesson-2/Intensity-and-the-… (Higher level site)
***EXTENSION***
2b. What causes hearing loss?
- list the factors that lead to hearing loss
- explain how the use of earbuds increases the damage to the ear
View the sites to read about earbuds (earphones)
http://www.mayoclinic.org/diseases-conditions/hearing-loss/basics/risk-…
http://www.smh.com.au/digital-life/how-your-ipod-could-be-damaging-your-ears-20110606-1fpt8.html
Take this digital hearing test (use ear phones)
http://egopont.com/hearing_tests.php?soundID=1000 n.b This is NOT a professional hearing examination.
3a. What are the current recommendations for responsible use of music players?
- list the recommendations from these and any other sources to prevent noise induced hearing loss
Scroll down to the section on Recreational Hearing Loss (RHL)
http://www.aph.gov.au/Parliamentary_Business/Committees/Senate/Communit…
http://www.nbcnews.com/health/health-news/generation-deaf-doctors-warn-…
http://www.livescience.com/9742-loud-ipod.html
3b. Compare the recommendations to the Apple site
- view the recommendations from Apple, compare this to the other sources.
view the Apple site
http://www.apple.com/au/sound/
Evaluation
Once you have completed each section, consider if/ how your personal use of ear buds may change.
What would you recommend to a younger friend to prevent them from hearing loss?
Discuss: Should manufacturers of personal music players take more responsibility in preventing noise induced hearing loss?
Credits
For use at the Inaburra School, 2017.
Please request permission for use.
Teacher Page
Students can also write a letter to Apple Inc. outlining their recommendations to prevent NIHL, comparing Apple's advice to the current research.
marking criteria:
Marking Criteria
Process 1 and 2 (Research), mark /20
|
Process |
Maximum mark |
Mark |
|
Definition of sound |
1 |
|
|
Diagram of a sound wave |
1 |
|
|
Definition of terms pitch and volume |
1 |
|
|
Structures and function in the human ear |
2 |
|
|
Ear image |
1 |
|
|
Flow diagram- sound through the ear |
2 |
|
|
Units for sound volume |
1 |
|
|
Volume scale, iPod rated on scale |
1 |
|
|
List of factors that lead to hearing loss |
2 |
|
|
Explanation of earbuds increasing damage to the ear |
3 |
|
|
Summary of recommendations |
3 |
|
|
Comparison to Apple recommendations |
2 |
|
|
Total /20 |
Letter mark /20
|
|
0 |
1 |
2 |
3 |
|
Audience and Text structure |
|
Simple letter Format |
Address and letter format correct |
|
|
Introduction |
No introduction |
Simple introduction, no outline |
Introduction outlines reason for letter and briefly addresses the topic |
Thorough introduction outlining topic and addressing recommendations |
|
Recommendations |
Copy and paste recommendations |
Recommendations in own words from a variety of sources |
Recommendations in own words, variety of sources used and linked to evidence |
Extensive list of recommendations, well researched and supported by evidence |
|
Supported by evidence |
No supporting evidence |
Minimal link to evidence |
Attempts to link recommendations to evidence |
Strong links to evidence explaining recommendations |
|
Vocabulary and Scientific terminology |
Minimal use of scientific terminology |
Some scientific terms used |
Scientific terms used appropriately and used to explain recommendations/ evidence |
Extensive use of scientific terminology and high level vocabulary |
|
Paragraphs, Punctuation and Spelling |
Many errors in formatting and spelling |
Minimal errors in spelling and formatting |
No errors in spelling and formatting |
Excellent layout, paragraph structure, grammar and spelling |
|
Conclusion |
No conclusion |
Brief conclusion, no summary |
Conclusion summarises recommendations briefly |
Thorough conclusion summarising recommendations and concluding the letter |
|
Total / 20 |
|
After completing all three sections of the Wequest Process you should now have an understanding of how scientific evidence can support recommendations.
It is possible that your personal practice of listening to music may have been changed according to your own recommendations.
For use at The Jannali High School, 2016.
Please seek permission for use.