Curiosity Class 8 Science Chapter 6 Pressure, Winds, Storms, and Cyclones Case Study Questions

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Last Updated on August 30, 2025 by XAM CONTENT

Hello students, we are providing case study questions for class Class 8 Science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class Class 8 Science. In this article, you will find case study questions for cbse class Class 8 Science chapter 6 Pressure, Winds, Storms, and Cyclones.

Chapter	Pressure, Winds, Storms, and Cyclones
Type of Questions	Case Study Questions
Nature of Questions	Competency Based Questions
Board	CBSE
Class	Class 8
Subject	Science
Useful for	Class 8 Studying Students
Answers provided	Yes
Difficulty level	Mentioned
Important Link	Class 8 Science Chapterwise Case Study

Case Study Questions on Pressure, Winds, Storms, and Cyclones

Case Study 1: Pressure in Daily Life

Megha and Pawan carried identical bags on a picnic. Megha’s bag had broad straps, while Pawan’s had narrow straps. Pawan’s shoulders hurt, though both bags weighed the same. The difference was due to pressure: the same force acting on a smaller area (narrow straps) produces greater pressure, causing more discomfort. Similarly, sharp knife edges or pointed nails are effective because they apply greater pressure on a smaller area.

Questions

Q1. What is pressure?
(a) Force per unit distance
(b) Force per unit area
(c) Weight of the object
(d) Area × Force

Q2. Why does a bag with narrow straps hurt more than one with broad straps?
(a) It increases the bag’s weight
(b) It reduces gravitational pull
(c) It increases pressure on the shoulders
(d) It decreases force applied

Q3. Which of the following is true?
(a) Pressure decreases if area decreases
(b) Pressure increases if area decreases
(c) Pressure is independent of area
(d) Pressure is always constant

Q4. Why are knives made sharp at the edge?
(a) To reduce force applied
(b) To increase pressure for cutting
(c) To look attractive
(d) To reduce area of grip

Answers with Explanations

• A1. (b) Force per unit area
  ✔ Formula: Pressure = Force ÷ Area.
• A2. (c) It increases pressure on the shoulders
  ✔ Narrow straps apply same force over smaller area.
• A3. (b) Pressure increases if area decreases
  ✔ Smaller area = more pressure.
• A4. (b) To increase pressure for cutting
  ✔ A sharp edge concentrates force on a very small area.

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Case Study 2: Air Pressure and Winds

Air all around us exerts pressure called atmospheric pressure. When you blow air between two balloons, they move closer because high-speed air creates a low-pressure region between them. Air always moves from high-pressure to low-pressure regions, forming winds. This principle also explains land and sea breezes: during the day, warm air over land rises, and cooler air from the sea rushes in, forming a sea breeze. At night, the process reverses, forming a land breeze.

Questions

Q1. What is the pressure exerted by the air around us called?
(a) Wind pressure
(b) Air current
(c) Atmospheric pressure
(d) Cyclone pressure

Q2. Why do winds blow?
(a) Due to Earth’s rotation only
(b) Due to differences in air pressure
(c) Due to evaporation of water
(d) Due to rainfall

Q3. During the day, which breeze flows?
(a) Land breeze
(b) Sea breeze
(c) Cyclone breeze
(d) None

Q4. Why do the balloons move closer when air is blown between them?
(a) Air pushes them inward
(b) High-speed air creates low pressure between them
(c) Balloons lose weight
(d) Air reduces friction

Answers with Explanations

• A1. (c) Atmospheric pressure
  ✔ Air exerts pressure in all directions.
• A2. (b) Due to differences in air pressure
  ✔ Wind is air moving from high to low pressure regions.
• A3. (b) Sea breeze
  ✔ Daytime: land heats faster, air rises, sea air moves in.
• A4. (b) High-speed air creates low pressure between them
  ✔ Surrounding higher pressure pushes balloons inward.

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Case Study 3: Storms and Cyclones

Cyclones are large storms formed over warm oceans. Moist air rises, cools, and condenses, releasing heat. This makes more air rise, creating a low-pressure system. Due to Earth’s rotation, the air begins to spin, forming a cyclone. Cyclones cause heavy rain, strong winds, and floods, damaging homes, crops, and power supply. The calm centre is called the eye of the cyclone, while the surrounding areas experience violent winds.

Questions

Q1. Where do cyclones form?
(a) Cold mountains
(b) Warm ocean waters
(c) Deserts
(d) Poles

Q2. What is the calm centre of a cyclone called?
(a) Eye of the cyclone
(b) Low-pressure zone
(c) Thunderstorm centre
(d) Cloud ring

Q3. Which factor gives cyclones their spinning motion?
(a) Sea waves
(b) Earth’s rotation
(c) Evaporation
(d) Lightning

Q4. Which of the following is NOT caused by cyclones?
(a) Flooding
(b) Landslides
(c) Roofs blowing off
(d) Increase in soil fertility

Answers with Explanations

• A1. (b) Warm ocean waters
  ✔ Heat and moisture fuel cyclones.
• A2. (a) Eye of the cyclone
  ✔ Calm centre surrounded by violent winds.
• A3. (b) Earth’s rotation
  ✔ Causes winds to spin.
• A4. (d) Increase in soil fertility
  ✔ Cyclones reduce soil fertility due to saltwater flooding.

We hope the given case study questions for Pressure, Winds, Storms, and Cyclones Class Class 8 helps you in your learning.

Also check

• Curiosity Class 8 Science Chapter 6 Pressure, Winds, Storms, and Cyclones Case Study Questions
• Curiosity Class 8 Science Chapter 5 Exploring Forces Case Study Questions
• Curiosity Class 8 Science Chapter 4 Electricity: Magnetic and Heating Effects Case Study Questions
• Curiosity Class 8 Science Chapter 3 Health: The Ultimate Treasure Case Study Questions
• Curiosity Class 8 Science Chapter 2 The Invisible Living World Case Study Questions
• Curiosity Class 8 Science Chapter 1 Exploring the Investigative World of Science Case Study Questions

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Topics from which case study questions may be asked

• Concept of pressure
• Atmospheric pressure and its effects
• Wind formation and direction
• Thunderstorms and cyclones
• Safety measures during storms
• Air pressure and weather forecasting
• Disaster preparedness

Cyclones are intense storms formed due to differences in air pressure and can have devastating impacts.

Important Keywords

• Pressure – Force applied per unit area.
• Pascal (Pa) – SI unit of pressure (N/m²).
• Atmospheric Pressure – Pressure exerted by air around us.
• Sea Breeze – Cool air from sea to land during daytime.
• Land Breeze – Cool air from land to sea during nighttime.
• Cyclone – A large, rotating storm system with strong winds and rain.
• Eye of Cyclone – Calm centre of a cyclone.
• Thunderstorm – A storm with thunder, lightning, strong winds, and rain.
• Lightning Conductor – A metal rod fixed on buildings to protect from lightning strikes.
• Buoyant Force (Upthrust) – Upward force exerted by liquids on objects.

Frequently Asked Questions (FAQs) on Pressure, Winds, Storms, and Cyclones Case Study Questions