I. Multiple choice: Choose the letter of the correct answer.
Question:
1. Sound Waves need a ____ to travel through.
a. medium
b. space
c. move
d. vacuum
2. The speed of sound depends on the?
a. electricity,density and temperature of the meduim
b. The nature of the medium
c. Density of meduim
d. None
3. Sound travel faster in mediums that are ____.
a. Very cold
b. More denser
c. Elastic
d. Wet
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Answer:
1. a
2. a
3. c
Explanation:
(1) Sound needs a medium in which to travel.
(2) The speed of sound in an ideal gas depends only on its temperature and composition.
(3) sound can travel faster through mediums with higher elastic properties
ang alen ba? hinde ko alam