Question

Describe how to make the following models with the help of objects found around you.
1. Sandclock model
2. Stethoscope model​

Answer 1

Answer:

the answer is written below

Explanation:

1.)Sand clock model:-

Pour the salt or sand into one of the jars . Cut a circular piece of paper that is big enough to fit over the opening of the jar . Punch a hole in the middle of the piece of jars

2.)Stethoscope model​:-

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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