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Why are sound waves called mechanical waves?
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How are the wavelength and frequency of a sound wave related to its speed?
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Why is sound wave called a longitudinal wave?
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Give two examples of bodies having non-uniform motion.
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Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
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Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
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Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
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Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
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An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.
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Which wave property determines loudness?
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Which wave property determines pitch?
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What are wavelength, frequency, time period and amplitude of a sound wave?
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Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
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Distinguish between loudness and intensity of sound.
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What is loudness of sound? What factors does it depend on?
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What are the conditions for 'something' to be called 'matter'?
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What are the conditions for 'something' to be called 'matter'?
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Name two processes which provide the best evidence for the motion of particles in matter.
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