Showing posts with label sound and light. Show all posts
Showing posts with label sound and light. Show all posts
Tuesday, October 13, 2009
October 12th and 15th
It is an odd week as the classes are off schedule. On the 12th and 13th we will do an activity using the mosquito ring tone. We will see who can hear the different ring tones. We will also do a lab that shows how different frequencies travel through the air.
Friday, October 9, 2009
October 9th
Today we had a C day and worked on both Units Conversion and the relationship between frequency and pitch.
We started off with this question. If speedy the turtle can 'run' two feet every five seconds, how many feet per minute can he travel? How many miles per hour is that?
We then took a short quiz and then did the quicklab on page 39.
We started off with this question. If speedy the turtle can 'run' two feet every five seconds, how many feet per minute can he travel? How many miles per hour is that?
We then took a short quiz and then did the quicklab on page 39.
Wednesday, October 7, 2009
October 7th and 8th--starting sound
Today in class we started chapter two in our sound and light book. We first built shoebox guitars and observed how the thickness of the string affected the sound.
We then put a bell inside a vacuum chamber and listened to the change in sound of the bell as we removed some of the air from the chamber. We also put balloons and marshmallows in the vacuum chamber and saw what happened to them.
We then bounced a laser off of a model of an ear drum and saw how different sounds created different laser patterns.
After these demonstrations we completed the good vibrations quick lab on page 30. We experimented with a tuning fork and saw how sound was vibration.
At the close of class we reviewed our recent test.
Note: new homework is available on the resource table.
We then put a bell inside a vacuum chamber and listened to the change in sound of the bell as we removed some of the air from the chamber. We also put balloons and marshmallows in the vacuum chamber and saw what happened to them.
We then bounced a laser off of a model of an ear drum and saw how different sounds created different laser patterns.
After these demonstrations we completed the good vibrations quick lab on page 30. We experimented with a tuning fork and saw how sound was vibration.
At the close of class we reviewed our recent test.
Note: new homework is available on the resource table.
Wednesday, September 16, 2009
September 14th-17th
On the 14th and 15th we took our safety quiz, then reviewed our lab activity by sharing and comparing our data. Finally we experimented with our film cannister cannon.
On the 16th and 17th we began to work in chapter one of the "Sound and Light" book. We looked at examples of transverse and ocean waves, and diagrammed a transverse wave. We defined crest, trough, wavelength and amplitude.
We also practiced using the sq3r reading method as we started to read chapter one, section one.
Finally, we did a human wave, and pointed out crests, troughs and wavelength, then we switched gears and worked on the helium hoop activity.
On the 16th and 17th we began to work in chapter one of the "Sound and Light" book. We looked at examples of transverse and ocean waves, and diagrammed a transverse wave. We defined crest, trough, wavelength and amplitude.
We also practiced using the sq3r reading method as we started to read chapter one, section one.
Finally, we did a human wave, and pointed out crests, troughs and wavelength, then we switched gears and worked on the helium hoop activity.
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