Question

I've answered these two questions and need someone to check them for me:

1.Describe two characterisitics that light and sound have in common.
Ans- They both transfer energy [and I need help thinking of a second one]

2.Describe two ways in which light and sound are different
Ans- Light is an electromagnetic wave and it travels faster through empty space; sound is a mechanical wave and it travels faster through dense matter.

Thanks!
-MC

Answer 1

Thanks
-MC

Answer 2

1. An important similarity is that both have wavelike properties: a 'travelling' oscillation, with frequency, wavelength and a fixed wave speed.

2. An important difference is that light is a transverse wave and sound is a longitudinal wave (with motion back and forth along the direction of wave propagation). See http://www.kettering.edu/~drussell/Demos/waves/wavemotion.html
to see a video of the difference. With light, the transverse variation involves electric and magnetic fields, not particle motion.

Answer 3

Thanks!
-MC