NCERT - 7 - Science :: Winds, Storms and Cyclones

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Go To: NCERT-Science-Grade 7

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[Contributor - Anu Nived]


Objective: To teach properties of air, introduce the concept of cyclones, storms and thunderstorms

Subtopics to be covered:

- How a thunderstorm becomes a cyclone and its destructive features

- Ways to monitor cyclones and cyclone safety measures

Learning Outcome:

- Students know the phenomena that causes the creation of storms and cyclones

- They know about the various advanced technologies that helps to monitor Cyclones

[Contributor - Arshea Bimal, Kripa S]


1. Crumple a small piece of paper into a ball of size smaller than the mouth of an empty bottle. Hold the empty bottle on its side and place the paper ball just inside its mouth. Now try to blow on the ball to force it into the bottle. Try the activity with bottles of different sizes. Challenge your friends if they can force the paper ball in by blowing into the bottle.

2. Hold a strip of paper, 20 cm long and 3 cm wide, between your thumb and forefinger. Now blow over the paper.

3. https://www.youtube.com/watch?v=zY7F6vfPGFA (Air exerts pressure)

[Contributor - Dr. Nikitha Narayan]

Term Transliterated Term Translated Term
Anemometer एनीमोमीटर पवनवेगमापी
Cyclone साइक्लोन चक्रवात
Hurricane हरिकेन तूफान
Lightning लाइटनिंग आकाशीय बिजली
Low pressure लौ प्रेशर कम दबाव
Monsoon winds मानसून विंड्स मानसून हवाएं
Pressure प्रेशर दबाव
Thunderstorms थंडरस्टोर्म्स गरज
Tornado टोर्नेडो बवंडर
Typhoon टाइफून आंधी
Wind flow pattern विंड फ्लो पैटर्न हवा प्रवाह पैटर्न
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