Speed of Sound Lab

Today the class performed a lab to determine the speed of sound in air. There was a worksheet with questions on the speed of sound that was handed out. This is due for Monday.
Scribe for Monday will be benofschool.

Vibrations and Sound Part 2 Video

Today , we watched the physic film .Mr "same same " (i dont know his name ^^) ..teached us about the sound.In the film,we saw when we knock one of 2 tuning forks which faced to each others, the one which was not knocked also vibrate because of the resonance,and the other things are the tuning fork vibrate and created air pressure ect.... and the end of the class,Ms. Kozoriz showed us the voice of the big woman which can broke a glass >.< ,and the answer of the Exercises:3-4-5-7, you can check them if you missed today 's class...
3/ Dog can hear frequencies in ultrasonic region,you can't
4/ a.Change amplitude
b. change frequency
5/Vibration of sound caused energy to trigger the avalanche
7/ A medium is needed



Next scribe is kissy

The Best Blog Ever!!

Ok so today we read the first couple pages in the yellow booklet. We learned that sound is a LONGITUDINAL wave. (Remember that!) Also, slightly different sounds produce a term a called "beats" when combined. Beat waves are the difference in the sounds. For example, if one sound is 440 hertz and another sound is 436hertz then the beat wave (difference) is 4 hertz. Yeah....that's all I can remember because it's like really late. Anyways we also got a worksheet that had questions like, if a man sets his clock to a factory's whistle that rings at noon and he is 3 km away, will his watch be BEHIND OR AHEAD? We also got homework in the yellow booklet. Questions 3,4,5,7,8,9 or something like that. Then we had a fire drill. Oh yeah and the most exciting part of the day was ms.K's pendulum (I think i spelled this wrong) experiment that totally worked! HAHA......ok enough sarcasm. Well I don't know anyone's name in the class, oh wait i pick Cow Milk to scribe for tomorrow...ok goodnight...i hope i make it to school tomorrow

Same Same Video

Hello, its me Kristina and I am the scribe for yesterday's class. We basically just watched a video of Vibrations and Sound and stuff with the "same same" guy. While we were watching, we were supposed to jot down 5 to 8 points on things that we learned or had learned prior to watching the video and then hand it in. After watching the video, Ms. Kozoriz gave us back our tests and went over the answers for us (check previous blog post).

That's pretty much it, as for the next scribe...I choose Sangiie.

Waves in 2D Test

Waves in 2D Review

Waves in Two Dimensions Review

Today in class we went over questions 16 and 17 in the green booklet on Waves in two dimensions. We also corrected the answers on the review sheets so we can prepare for the test on Wednesday.
Scribe for Thursday is kristina