Select Board & Class
1 hz = how many decibels?
what is the relationship between frequency and time period
give 15 musical instruments with their names and their vibrating parts?
A concave board which is placed behind the speaker in large halls or auditoriums is called
a) sound board b) sound catcher c) sound reflector d) sound box
give 4 advantages and disadvantages of loudspeakers?
Which of the following voices is likely to have maximum frequency?
What is the difference between Noise and Music?
State true or false
1.Sound can be produced by beating an object irrespective of whether there are vibrations or not.
2.The sound of a tabala normally has a lower pitch than the sound of a violin.
3.A short flute will produce sound of lower pitch than a long flute.
some steps to reduce noise pollution?
a spoon can sound like a bell. No, this is not riddle. it's science. prove it?
Explain the principle on which Jaltarang works.
how is sound produced in mridangam
5 differences between loudness and pitch
What is the relationship between the loudness and the amplitude of the vibrating body?
Why the voice of men, women and children are different?
write a short note on noise pollution and i need it fast please
What is the difference between Vibration and Oscillation ?
Which parts of jal tarang vibrates
How do loudness and pitch of sound depend on amplitude and frequency respectively?
which characteristic of a vibrating body determines the-
(b)Pitch of the sound produced by it?
1. In which medium speed of sound is maximum an din which minimum ?
2. A pendulum makes 16 oscillations in 2 seconds . What is the frequency of the pendulum ?
how do whales and dolphins communicate under water?
what are the vibrating part of following objects
a.harmonium b.tabla c.flute d. guitar e.ghatam f.manjira g.noot h.kartal i.sitar j.striking a pan
What are longitudinal and transverse wave? and is Sound a longitudinal wave?
a spoon can sound like a bell prove it
What is amplitude,frequency and time period?
what is amptitude
Which of the following voices is likely to have minimum frequency.
(a) A man (b) A baby girl (c) A baby boy (d) A woman
identify the sources of noise pollution in your locality. Discuss with your parents, friends and neighbours. Suggest how to control noise pollution. Prepare a brief report and present it in the class.
suppose you are going in a jet plane,and one of the windows breaks due to an accident.what problems do you think you will face?
name any 7 musical instruments and their vibrating parts
what is the SI unit of vibration ?
compare the transmission of sound in solids , liquids and gases?
only noise produces noise pollution.do u agree?give reasons.
give two uses of ultrasonic vibrations in industry .
How can you say that sound is a form of energy? Explain with examples.
an explosion occurs on the moon.will it be
b)heard on the earth instantly or after sometime?
any 5 difference between audible and inaudible sound plz do it quick.
if rubber band streched ________ sound produced.
1) low pitch 2) high pitch 3) some times low and high pitch 4) none of these
What is audible and inaudible sounds
A child with a moderately severe hearing loss may have defective speech. Why?
In the game of hide and seek how the blind folded person guess ho is the nearest person to him
If we want to hear a train approaching from far away , why it is more convenient to put th ear to the track ?
how do human beings produce sound
What are ultrasonic sounds? Write some applications of ultrasonic waves.
what are two important properties of sound
1 give reasons
A) Cinema halls and auditoriums are carpeted and their walls are coated with rough material
b) Echoes are not formed in our classrooms
The amplitude of the sound wave decides on its _________.
Write an activity to prove that sound needs a medium for propogation .
I searched it on the study material but realistic activities are needed inculing
2) Materials Required
4) Observation / Conclusion
Thanks in adance and don't forget to wish me 'All The Best' for the exam . Tomorrow it will take place .
what are disadvantages of sound pollution
How to make ektara at home
if the thickness of vibrating string is increased,its pitch-------------
what is sound ?
define sound .
difference between audible and inaudible sound
a voilin is always stored with its string loosened to present them from snapping. when it is being tuned the strings are tightened gradually. what effect does this have on the pitch of the note produced.
explain how noise pollution is harmful to human beings?
How sound is produced by dholak?
what is noise pollution
Will sound waves having frequencies of 144Hz and 240Hz produce a musical sound? Why?
what is the difference between time period and frequency
describe an experiment to show that sound can travel through liquids.
If the amplitude is increased by 3 times , by how much does the loudness increase?
time taken to complete one oscillation is called
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