describe how to make the following models with the help of objects found around you 1) sand clock model 2) stethoscope
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Explanation:
Answer:
Stethoscope clock model
Explanation:
Take a small funnel of 6-7 cm in diameter. fix a rubber tube (50 cm long) tightly on the stem of the funnel. stretch a rubber sheet (or a balloon) on the mouth of the funnel and fix it tightly with a rubber band. put the open end of the tube on one of your ear. place the mouth of the funnel on your chest near the heart. now try to listen your heartbeat carefully.
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