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Prepare a flow chart of various natural resources.
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Can sound travel through (a) iron, and (b) water?
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Which of the following cannot transmit sound? Water, Vacuum, Aluminium, Oxygen gas
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Name the physical qantity whose SI unit is 'hertz'.
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What is the general name of the waves consisting of :
(a) compressions and rarefactions?
(b) crests and troughs?
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What should an object do to produce sound?
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What is the name of the strings which vibrate in our voice box when we talk?
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Name the device which is used to produce sound in laboratory experiments?
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What conclusion can be obtained from the observation that when the prongs of a sound making tuning fork touch the surface of water in a beaker, the water gets splashed?
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State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.
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A tuning fork has a number 256 marked on it. What does this number signify?
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What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
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If 20 waves are produced per second, What is the frequency is hertz?
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Name four ways in which sound can be produced.
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If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
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Which object is vibrating when the following sounds are produced?
(i) The sound of a sitar
(ii) The sound of a tabla
(iii) The sound of a tuning fork
(iv) The buzzing of a bee or mosquito
(v) The sound of a flute
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Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
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Describe a simple experiment to show that the prongs of a sound producing tuning fork are vibrating.
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