Ito po katuloy

7. The Unit Hertz (Hz) is name after________
A.Heinrich Rudoft Hertz B.Heinrich Hertz
C.Hertz Johannes
D.Michael Jay Hertz

8. What is called a wave that is displeasing in the sound senses?
A.Dirt B.Smoke
C.Noise. D.Disgust

9. a kind of energy produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium.
A.Sound B.Heat
C.Light D.Wave

10. Sound can travel in which of the following medium:
A.Solid B. Liquid
C.Gas D. All of the above

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