ANWER THE FOLLOWING
Why can sound not be heard on the moon?
2. To hear a train approaching from far away
put the ear to the track?
Is it more convenient
3. How the trees planted along road sides reduce noise
4. Write the correct words by putting letters in correct sequence
(1) lynx
any soner
IL FILL IN THE BLANKS
1. The average rate of oscillations of a simple pendulum is 200
oscillations per seconds. Its time period in milliseconds is
2. Time taken to complete one oscillation is called
sound wave
of the
MULTIPLE CHOICE QUESTIONS
1. Eardrum is a part of
a Sound producing organ
c. Hearing organ
2. The hearing range of human car is
a. 20 Hz to 20.000 Hz
b. Skeletal system
d. Reproductive oro
b. Less than 20 Hz
d. 20 Hz to 25.000 AZ
c. More than 20,000 Hz
3. The voice box is called:
a. Stomach
c. Larynx
b. Heart
d. Mouth
Answers
Answered by
0
Answer:
sound cannot be heard due to absence of medium that is air.. and sound needs a medium to travel
Answered by
0
Explanation:
2. no as the sound of horn of train could be harmful for our ears hence, it is not convienet.
4 larnyx
mcq
1 - a
2 - b ( your question is wrong it should be human being instead of car
3 larnyx
please thank me and mark this answer as branliest answer if you are satisfied with it
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