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| Syllabus | ||||
OP40 |
Show that sound is a form of energy |
MyYouTube. 7 mins |
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Sound is produced by vibrations |
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A speaker (with
sound) |
3 Star |
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| 3-D Acoustic Manipulation | Youtube. 2 minutes. Incredible | 5 Star | ||
Recovering speech by analysing the vibrations of a crisp packet |
Youtube. 5 minutes. Fantastic | 5 Star |
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| Visualising sound waves - a history of Chladni waves | Link | From ted.com | ||
| What does sound look like? Pretty dang cool | Youtube. 2 minutes. | |||
Chrome Music Lab
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link | Fantastic site from musiclab.chromeexperiments.com. Because music is for everyone |
4 Star | |
How a speaker works |
MyYoutube. 5:30. |
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Sources of Sound, Loudness and Pitch |
Useful introduction with Questions |
3 Star |
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Video of the vocal chords |
Youtube. 1 minute |
3 Star |
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| Cornstarch on a speaker | Youtube. 1 minute | 3 Star | ||
Includes some very cool slo-mo video clips to demonstrate the vibrations. |
Youtube. 9 minutes.
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4 Star
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| Use an iphone to demonstrate the vibrations in guitar strings | Youtube. 2 minutes. Why not try this yourself - it's very cool! | 5 Star |
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OP41 |
Show that sound transmission requires a medium |
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| Using an unusual pump! | MyYoutube. 3 minutes. | |||
| Simple animation showing how sound vibrations travel through the air from source to ear. | From absorblearning.com |
3 Star |
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The bell and bell-jar |
From absorblearning.com |
3 Star |
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A more interactive version |
Click on
the "listen with varying air pressure" tab |
5 Star |
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Echoes are reflected sound |
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Animation of a ship using sonar to locate a shoal of fish |
From absorblearning.com |
3 Star |
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| Directing and focusing sound | Link | From ted.com | ||
OP42 |
Understand that the ear detects sound vibrations |
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Nice animation of sound energy travelling from source to the ear. |
From absorblearning.com |
5 Star |
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Exposure to very loud sounds can cause damage to hearing |
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How the human ear works |
BBC. Youtube. 1 minute | 4 Star | ||
| Download a Mosquito tone to your phone | Of course I don't advocate you use this in my class | |||
| Typical sound frequencies - can you label the missing parts? | Link | From absorblearning.com | ||
OP43 |
Recall that the speed of sound is less than the speed of light |
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OP44 |
Explain the time lag between seeing and hearing the same event |
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So what's a Sonic Boom? |
Excellent explanation, this was an entry to a video competition. Nice idea |
5 Star |
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Slightly querkier explanation |
4 Star |
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Nice image caused by jet fighter plane YouTube. Ten seconds |
4 Star |