4-15


 * April 14, 2009

Daily Agenda:** Collect any rides Quiz Reminder Permission slip reminder Daily Question Finish Reviewing Waves Characteristics Lab

Which direction will this point move on a longitudinal wave? Using a simulation wave machine Mr. Manning showed us that if the point is in the compression it moves with the transfer of energy but if it is out of the compression it moves back. Below is a picture of the simulation wave machine for the longitudinal wave:
 * Daily Questions:**

Which direction will this point move on a transverse wave? Using a similar simulation wave machine Mr. Manning showed us what happened to the point on a transverse wave. We learned the points on a transverse wave move up and down in place. Below is a picture of the simulation wave machine for a transverse wave:

In another demonstration Mr. Manning plucked the large spring to prove that the amplitude of the spring can move the ball next to it.

1. Transfer Matter 2. ...moving something or tension 3. a. a bump caused by movement b. multiple pulses 4. a. mechanical b. matter c.electromagnetic 5. a. matter b. electromagnetic c. mechanical 6. a. longitudinal b. transverse c. surface 7. a. longitudinal b. transverse c. surface 8. Draw the pictures 9-13. We discussed elements of the waves 9. Amplitude: distance from crest to center of wave Frequency: number of cycles of a wave that pass a particular location in one second Period: time to fill one wave length Crest: highest point of wave Trough: lowest point of wave 10.Compression: clumping of waves Rarefraction: limited amount of waves 11. Change the tension in the spring 12. The wavelength increases 13. The period decreases
 * Wave Notes (page 2): We discussed Answers to the notes**


 * Lab: With the time left in class we made predictions on the Mechanical Wave Characteristics Lab and briefly got started.**

All Roller Coaster Ride drawings and descriptions are due to Mr. Manning by Friday There is a quiz on Thursday April 16th on Waves. Be sure you know terms and how waves work. Also Permission Slips for Hershey Park need to be submitted to Mr. Manning as soon as possible.
 * Homework:**