Pressure Winds Storms Cyclones Class 8 PPT – Curiosity Ch 6

Class 8 Science Chapter 6 – Pressure, Winds, Storms and Cyclones (PPT)

This is a complete 163-slide illustrated PPT for Class 8 Science Chapter 6, based on the new NCERT Curiosity textbook, Session 2026-27. Every concept — pressure, air pressure, wind formation, thunderstorms, lightning, and cyclones — is explained with 3D visual diagrams, real-life examples, activities, and previous-year CBSE questions. 100% free, no login required.

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What This PPT Covers

6.1 Pressure

• Pressure = Force / Area, with real-life bag-strap and cloth-ring examples
• Why broad surfaces reduce pressure and narrow surfaces increase it
• Only perpendicular forces count towards pressure

6.2 Pressure Exerted by Air

• Air exerts pressure in all directions, demonstrated with hands-on activities
• Atmospheric pressure and everyday examples (straws, suckers, water tanks)

6.3 Formation of Wind

• Sea breeze and land breeze — why each is named after where it comes from
• Uneven heating of land and water as the cause of wind
• CBSE previous-year question on sea breeze formation explained

6.4 High-Speed Winds Lower Air Pressure

• Why fast-moving air creates low pressure (Activity 6.5 and 6.6 balloon experiments)
• How high-speed winds can blow off a roof

6.5 Storms, Thunderstorms and Lightning

• Charge separation inside a cloud and how lightning forms
• Thunder vs thunderstorm vs lightning — clear definitions
• Local Indian thunderstorm names: Kalboishakhi, Bordoisila
• Lightning safety — what to do and what not to do, plus the lightning conductor

6.6 Cyclone

📊 Also download the Pressure, Winds, Storms and Cyclones Class 8 PPT (163 slides) – Curiosity Chapter 6. Free, no login.

• How a cyclone forms over warm ocean water and what makes it spin
• Eye of the cyclone and storm surge explained
• Real cyclone example: Amphan (2020), peak wind speed 270 km/h
• Staying safe during a cyclone — IMD alerts, emergency kits, evacuation

NCERT Exercise Questions Covered (Q1–Q9)

• Q1 (i–iv): Pressure in connected vessels, suckers on smooth/rough surfaces, water tank height, force comparison between vessels
• Q2 (i–iv): True/False on wind direction, liquid pressure, storm at cyclone eye, thunderstorm car safety
• Q3: Pressure and sinking — standing vs lying on sand
• Q4: Numerical — pressure exerted by an elephant's foot
• Q5: Numerical — pressure comparison between two boats
• Q6: Why lightning would not occur without conducting clouds/air
• Q7: Two balloons in a bottle — pressure reasoning
• Q8: Explain how a storm becomes a cyclone
• Q9: Sea coast diagram — identifying land and sea breeze direction

Frequently Asked Questions

Q: Is this PPT based on the new NCERT Curiosity textbook?

Yes, fully aligned to the new NCERT Curiosity Class 8 Science textbook, Session 2026-27.

Q: How many slides does this PPT have?

163 slides covering every section of Chapter 6, including all NCERT exercise questions with answers.

Q: Is login required to download?

No. This PPT is 100% free with no login or sign-up required.

Q: Does it include lightning and cyclone safety tips?

Yes, dedicated slides cover lightning safety (what to do/not do) and cyclone safety measures.

Q: Is a worksheet also available for this chapter?

Yes — see the Pressure, Winds, Storms and Cyclones worksheet with answers linked below.

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