Thursday, March 30, 2017
Wednesday, March 29, 2017
3/29 Physics update and homework due 4/5
Hi folks,
Today we took time to learn about natural frequency and resonance as well as a few more bits and pieces regarding waves and how they transfer energy. We also took quite a bit of time to relate all this information on waves to how they apply to sound.
Homework for next week is to:
Read the Sound chapter in the book. Pages 390 to 400 (We've been talking on and off about sound this entire unit. This chapter will help to solidify a lot of the concepts we've already been discussing.)
Do Review Questions on page 401 #'s 1 - 20.
Today we took time to learn about natural frequency and resonance as well as a few more bits and pieces regarding waves and how they transfer energy. We also took quite a bit of time to relate all this information on waves to how they apply to sound.
Homework for next week is to:
Read the Sound chapter in the book. Pages 390 to 400 (We've been talking on and off about sound this entire unit. This chapter will help to solidify a lot of the concepts we've already been discussing.)
Do Review Questions on page 401 #'s 1 - 20.
Thursday, March 23, 2017
Wednesday, March 22, 2017
3/22 Physics update and homework due 3/29
Hi folks,
Today in class we took the time to get to know waves up close and personal. After taking a bit of time to review and deepen some of the concepts we've been working on, we took the time to create our own waves using Slinky's. We found out what frequencies we had to meet to create several different harmonics for the Slinky's.
For homework this week answer the following questions regarding today's Slinky Wave lab. I've included the data below for you to refer to.
1. What did you do to find the frequency?
2. All waves begin with a vibrating particle, what was the vibrating particle in this wave?
3. Did you feel that the frequency had to be fairly specific or could multiple frequencies create the harmonics?
4. As the number of harmonics got higher, what happened to the frequency?
5. As the number of harmonics got higher, what happened to the wavelength?
6. Draw a picture of the first, second, third and forth harmonic. Mark the wavelengths, the nodes and the anti-nodes. How many many waves, nodes and anti-nodes are there in each picture?
7. If your lab partners were standing 5m apart from each other:
a. What was the wavelength of the first harmonic?
b. What was the wavelength of the second harmonic?
c. What was the wavelength of the third harmonic?
d. What was the wavelength of the fourth harmonic?
8. We didn't measure amplitude, but what would we have measured if we wanted to find the amplitude of the Slinky wave?
9. Did amplitude have any effect on frequency or wavelength?
10. What did we discover the speed of the slinky wave was dependent on? Frequency? Wavelength? Amplitude? Coffee intake? Something else (if so, what else)?
11. What did we do to find the speed of the wave?
Today in class we took the time to get to know waves up close and personal. After taking a bit of time to review and deepen some of the concepts we've been working on, we took the time to create our own waves using Slinky's. We found out what frequencies we had to meet to create several different harmonics for the Slinky's.
For homework this week answer the following questions regarding today's Slinky Wave lab. I've included the data below for you to refer to.
1. What did you do to find the frequency?
2. All waves begin with a vibrating particle, what was the vibrating particle in this wave?
3. Did you feel that the frequency had to be fairly specific or could multiple frequencies create the harmonics?
4. As the number of harmonics got higher, what happened to the frequency?
5. As the number of harmonics got higher, what happened to the wavelength?
6. Draw a picture of the first, second, third and forth harmonic. Mark the wavelengths, the nodes and the anti-nodes. How many many waves, nodes and anti-nodes are there in each picture?
7. If your lab partners were standing 5m apart from each other:
a. What was the wavelength of the first harmonic?
b. What was the wavelength of the second harmonic?
c. What was the wavelength of the third harmonic?
d. What was the wavelength of the fourth harmonic?
8. We didn't measure amplitude, but what would we have measured if we wanted to find the amplitude of the Slinky wave?
9. Did amplitude have any effect on frequency or wavelength?
10. What did we discover the speed of the slinky wave was dependent on? Frequency? Wavelength? Amplitude? Coffee intake? Something else (if so, what else)?
11. What did we do to find the speed of the wave?
Monday, March 20, 2017
Slinky lab interactive website
Hi folks,
I thought that I had change this link in the email but apparently it didn't take. Here's the link to the slinky lab interactive. http://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Slinky-Lab
Best,
Jim Mueller
Friday, March 17, 2017
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