4-16-09

As I walked into the room I totally forgot we had a quiz and started to freak out. The first thing in today's class we did was a little quiz on the terminology about waves. This quiz included these words: Frequency: The number of cycles per second. Period: The time it takes to produce a full wave Amplitude: The Distance from the center line to the crest or trough We also had to label a longitudinal wave. Here is an example of what it was:

After completing that we moved on to our next activity. It was to finish our lab which we started the day before. In this lab we were supposed to find the relationship between changing the length, amplitude, frequency, and the material of the slinky and see if it affects the speed. We found out that the only ones that has an affect are the length of the spring and the material of the slinky. After collecting that data from the different groups, which were assigned different assignments, we moved onto question 2. In this question we were trying to figure out if the frequency of the wave relates to its wavelength. We found out that the greater the frequency, the shorter the wavelength. Our final question was trying to figure out if longitudinal wave pulses travel at the same speed as a transverse pulse on the same medium? We found that they travel at different speeds. After we were done we had to think about what factors would affect the speed of sound. Some of the factors I said included; wind, objects in the way, other noises, and rain. There are many more, but those were a few that I thought were the main reason. After finishing that we concluded another exciting day of Physics.