d. the same in all media
1. Vibration of molecules produces
energy
a. electrical
c. light
b. heat
d. sound
2. Sound travels faster in
a. gas
b. liquid
c. solid
3. Sound travels faster as temperature
a. decreases
c. reached absolute O
b. increases
d. unchanged
4. At 0°, sound travels in air at a speed of
a. 31 m/s
c. 331 m/s
b. 300 m/s
d. 339 m/s
5. Which of the following color has the longest wavelength?
a. yellow
b. red
c. blue
d. green
6. The bending of light rays as they pass obliquely from one medium to another
is called?
a. reflection
b. refraction c. diffraction d. frequency​