YAY ME! September 25,2008.

THANKS TO ARLYN FOR CHOOSING ME TO BE SCRIBE -_-". jk its ok.
Anywaaays, today in class.. we finished the "REFLECTION OF WAVES" and "REFRACTION OF WAVES" paragraphs from the study guide. For those who were absent from class, these are the answers..

REFLECTION OF WAVES:
The direction of waves moving in two or three dimensions is shown by RAY diagrams. The ray that reaches a barrier is called the INCIDENT ray. The ray that moves back from the barrier is called the REFLECTED ray. The direction of the barrier is shown by a line drawn at a(n) RIGHT ANGLE to the barrier. This line is called the NORMAL. The angle between the INCIDENT ray and the NORMAL is called the angle of incidence. The angle between the REFLECTED ray and the NORMAL is called the angle of reflection. The law of REFLECTION states that the angle of incidence equals the angle of reflection.

REFRACTION OF WAVES:
In water waves, the velocity is SLOWER in shallower water. If the incident ray is parallel to the normal, there is a change in the velocity and WAVELENGTH of the wave. If the incident ray is not parallel to the normal, there is a change in velocity, wavelength, and DIRECTION of the wave. The change in DIRECTION of a wave at the boundary between two media is called refraction.


We also corrected the REFRACTION sheet from yesterday.
1) 1.40
2) 1.24 x 10^8 m/s
3a) 41.4º
3b) 61.6º
4) 1.97 x 10^8 m/s
5a) the light ray should appear to be faster in the water rather than through the container.
5b) sin(theta)2 = 1.52 sin 27.7º
1.33

After correcting these papers, we were given time to finish our lab experiments and worksheets. We were also told to read pages 300-301 in the textbook, finish the last paragraph in the Study guide, and do questions number 1-4 at the end of the booklet.

The best part of today's class was the fire drill. Just kidding. Ummm, If i could choose Mrs. Kozoriz to be tmrw's scribe, i definately would, but i don't think that's allowed.. soooo i pick Erica!