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NCERT Solutions for Curiosity Chapter 6 Pressure, Winds, Storms, and Cyclones

Updated on 2026-09-05

About this chapter

Pressure is force per unit area , P = F/A . The same weight pressing on a smaller area gives a larger pressure — which is why a broad strap is comfortable, a pointed nail drives easily and a sharp knife cuts. The SI unit is N/m 2 , also called the pascal (Pa) . A liquid exerts pressure at the bottom of its vessel and on the walls — in fact in all directions . The pressure depends on the height of the liquid column , not on the width of the vessel or on the weight of liquid it holds. That is why overhead tanks are placed high and why a dam's base is broader than its top. Air also presses on everything around it. The pressure of the air surrounding us is the atmospheric pressure ; the force it exerts on just a 15 cm × 15 cm patch is about 2250 N — the weight of a 225 kg mass. We are not crus

  • Chapter opener
  • Chapter opening text · 6.1 Pressure
  • .1 Pressure
  • .2 Pressure Exerted by Air
  • .2 Pressure Exerted by Air · 6.3 Formation of Wind
  • .3 Formation of Wind
  • .4 High-Speed Winds Result in Lowering of Air Pressure
  • Chapter-end exercise, Questions 1–13
  • Interdisciplinary projects
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Exercises

  1. Chapter opener — Probe and ponder Page 80
  2. Chapter opening text · 6.1 Pressure — In-text Questions Page 81
  3. .1 Pressure — In-text Questions Page 826
  4. .1 Pressure — Table 6.1: Record your observations Page 826
  5. .1 Pressure — In-text Questions Page 836
  6. .1 Pressure — Activity 6.1: Let us try and find out Page 836
  7. .1 Pressure — In-text Questions Page 846
  8. .1 Pressure — Activity 6.2: Let us find out Page 846
  9. .1 Pressure — In-text Questions Page 856
  10. .2 Pressure Exerted by Air — Activity 6.3: Let us explore Page 856
  11. .2 Pressure Exerted by Air — In-text Questions Page 866
  12. .2 Pressure Exerted by Air — Activity 6.4: Let us perform Page 876
  13. .2 Pressure Exerted by Air · 6.3 Formation of Wind — In-text Questions Page 876
  14. .3 Formation of Wind — In-text Questions Page 886
  15. .3 Formation of Wind — Activity 6.5: Let us observe Page 886
  16. .4 High-Speed Winds Result in Lowering of Air Pressure — In-text Questions Page 896
  17. .4 High-Speed Winds Result in Lowering of Air Pressure (Fig. 6.13) — Activity 6.6: Let us observe Page 896
  18. Chapter-end exercise, Questions 1–13 — Keep the curiosity alive Page 94
  19. Interdisciplinary projects — Discover, design, and debate Page 97
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