Friday, November 06, 2015

Waves discussed

My son last night had a science question on his homework that asked how a change in frequency affects the speed of a wave.  I could remember the answer, but not a good way to explain it.   I thought there must be a decent Youtube video out there showing what happens, but on stuff like this, it can be surprisingly hard to find a good video for a high school level.

The best I could come up with, and it is pretty good, is from the Khan Academy talking about the speed of sound.  (It's the second in a series, but I don't think its essential to watch the first.  It also has more detail than necessary, but in the last 60 seconds, they deal with the frequency/speed issue pretty well.)

So, for all other parents with a similar problem, here it is:

    Speed of Sound:

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