मराठी

Make whistles of the things given below. Write in a sequence–from the loudest to the softest whistle. - Environmental Studies

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प्रश्न

Make whistles of the things given below. Write in a sequence–from the loudest to the softest whistle.

– Wrapper of a toffee 

– A leaf

– A balloon

– The cap of a pen

– Any other thing

टीपा लिहा
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उत्तर

The sequence from the loudest to the softest whistle is given below:

– The cap of the pen

– By putting fingers in the mouth

– By wrapping a toffee

– By a balloon

– By a leaf

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Blow Hot, Blow Cold
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 15: Blow Hot, Blow Cold - Blow Hot, Blow Cold [पृष्ठ १४३]

APPEARS IN

एनसीईआरटी Environmental Studies - Looking Around [English] Class 5
पाठ 15 Blow Hot, Blow Cold
Blow Hot, Blow Cold | Q 3.1 | पृष्ठ १४३

संबंधित प्रश्‍न

Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them.

  • Blowhard from your mouth onto your hands. How did you find the air from your mouth as compared to the air around you? Was it hotter, or cooler?

Balishtiye saw that the woodcutter was trying to cool the hot potatoes by blowing on them. What would have happened if he had eaten the potatoes without cooling them?


Have you ever burnt your tongue when you ate or drank something that was too hot? How do you cool some food when it is too hot?


For what other things do you blow air from your mouth?


Picture 1 - Mini tried to cool her tea by blowing on it. Which do you think will be hotter – Mini’s tea or the air she blew from her mouth?


Take a glass. Bring it near your mouth and blow hard on it. Do this two or three times. Does the glass look hazy?


Now again count how many times in one minute you breathed in and out.


While playing, Amit hit a wall. His forehead was swollen. Didi immediately folded a scarf (4-5 times), blew on it, and kept it on Amit's forehead. Why do you think didi did this?


You have all heard the ‘tick tick’ of the clock. Have you seen a doctor using a stethoscope to listen to our chest? What do you think she hears? Where is the sound coming from? Is there a clock inside your chest that keeps ticking away?


Do you want to listen to your heartbeat? Take a rubber tube as long as the distance from your shoulder to your elbow. At one end of the tube fix a funnel. Place the funnel on the left side of your chest. Put the other end of the tube to your ear. Listen carefully. Did you hear a dhak dhak sound?


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