Chapter 14 of 22
Chapter 14: When the Earth Shook!
2001 Gujarat Earthquake, Bhuj Disaster, Earthquake Safety Drills & Resilient Architecture | CBSE Session 2026–27
Core Pedagogical Competencies & Concepts
- On 26 January 2001, a massive earthquake struck Kutch and Bhuj in Gujarat, causing widespread collapse of buildings and loss of life.
- Earthquakes are caused by sudden slipping and movement of tectonic plates deep inside the Earth's crust.
- Emergency safety rule: Drop, Cover, and Hold on under a sturdy table, and move to open spaces away from tall structures and power lines.
- Earthquake-resilient local homes are built using lightweight timber frames, clay, cow dung, and woven bamboo that sway without collapsing.
All Textbook Exercises & In-Text Tasks (22 Questions)
100% Complete Ingestion
Q1
Textbook Exercise
What should a person do immediately if an earthquake strikes while they are indoors or outdoors?
[3 Marks]
✅ Step-by-Step Solution & Working
If Indoors:
- Do NOT run into stairwells or use elevators.
- Perform Drop, Cover, and Hold on: get under a heavy wooden table or bed and hold its legs firmly until shaking stops.
- Stay away from glass windows, mirrors, hanging chandeliers, and tall bookcases.
CBSE Step-by-Step Marking Scheme
Indoor actions (Drop, Cover, Hold under sturdy table)
1.5 Marks
Outdoor actions (Move to open field away from poles/buildings)
1.5 Marks
Q2
Textbook Exercise
How did villagers in Kutch rebuild their homes after the 2001 earthquake to ensure they would withstand future tremors?
[3 Marks]
✅ Step-by-Step Solution & Working
Villagers worked together using local materials and traditional knowledge:
- They mixed clay with cow dung to make thick insulating bricks and plastered walls with lime.
- They erected flexible lightweight wooden frames and bamboo pillars that absorb ground vibrations by swaying rather than cracking.
- They decorated the mud walls with traditional mirror work (Lippan art), creating safe, resilient, and climate-friendly round homes (Bhungas).
CBSE Step-by-Step Marking Scheme
Use of clay, cow dung, and lightweight wooden/bamboo frames
1.5 Marks
Circular Bhunga design absorbing seismic waves safely
1.5 Marks
Q3
Textbook Exercise
What is an earthquake? Describe the devastation caused by the 26 January 2001 Gujarat earthquake in Bhuj and Kutch.
[4 Marks]
✅ Step-by-Step Solution & Working
An earthquake is a sudden shaking or trembling of the Earth's crust caused by tectonic movements and release of energy along geological fault lines.
Devastation in Gujarat (26 January 2001):
Devastation in Gujarat (26 January 2001):
- A massive 7.7 magnitude quake struck while citizens were celebrating Republic Day.
- Thousands of buildings, schools, and hospitals in Bhuj, Ahmedabad, and Kutch collapsed into rubble in seconds.
- Over 20,000 people lost their lives, hundreds of thousands were injured, and millions became homeless in freezing winter.
CBSE Step-by-Step Marking Scheme
Scientific definition of earthquake from tectonic movements
1.5 Marks
Specific impacts on 26 Jan 2001 (Bhuj collapse, casualties, Republic Day)
2.5 Marks
Q4
Textbook Exercise
What role do rescue and disaster relief teams (NDRF, Army, NGOs, and medical workers) play after an earthquake strikes?
[3 Marks]
✅ Step-by-Step Solution & Working
Immediately following a seismic catastrophe:
- Search & Rescue: Specialist teams use sniffer dogs, acoustic listening devices, and hydraulic cutters to rescue trapped survivors from collapsed concrete debris.
- Medical Care: Field trauma hospitals and doctors provide emergency surgery, blood transfusions, and fracture stabilization.
- Relief Logistics: NGOs, the army, and government distribute emergency tents, blankets, drinking water packets, and hot meals to prevent epidemics.
CBSE Step-by-Step Marking Scheme
Search & rescue with sniffer dogs and hydraulic tools
1.5 Marks
Medical aid and food/shelter distribution
1.5 Marks
Q5
Textbook Exercise
Why do engineers recommend building circular or low-rise mud and bamboo houses (Bhungas) in earthquake-prone zones?
[3 Marks]
✅ Step-by-Step Solution & Working
Traditional circular huts (Bhungas) in Kutch have proven to be exceptionally earthquake-resistant:
- The circular geometry distributes ground seismic shock waves evenly along the curved perimeter, preventing localized stress concentrations that cause square corners to crack.
- Lightweight bamboo, wooden poles, and straw-clay mud walls do not shatter into heavy deadly concrete slabs if they fall, reducing injury risks to zero.
CBSE Step-by-Step Marking Scheme
Circular geometry distributing seismic energy evenly
1.5 Marks
Lightweight flexible materials preventing crushing injuries
1.5 Marks
Q6
Think and Discuss • Environmental Science & Ecology • When the Earth Shook!
[Textbook Activity & Question 1] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q7
Find Out and Write • Observational Field Study • When the Earth Shook!
[Textbook Activity & Question 2] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q8
Scientific Investigation • Ecosystem Relationships • When the Earth Shook!
[Textbook Activity & Question 3] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q9
Traditional Wisdom & Community Stewardship • Conservation • When the Earth Shook!
[Textbook Activity & Question 4] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q10
Survey & Data Collection • Experiential Inquiry • When the Earth Shook!
[Textbook Activity & Question 5] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q11
Health, Diet & Human Biology • Nutritional Science • When the Earth Shook!
[Textbook Activity & Question 6] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q12
Disaster Preparedness & Climate Resilience • Geography • When the Earth Shook!
[Textbook Activity & Question 7] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q13
Biodiversity & Habitat Adaptations • Wildlife Protection • When the Earth Shook!
[Textbook Activity & Question 8] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q14
Think and Discuss • Environmental Science & Ecology • When the Earth Shook!
[Textbook Activity & Question 9] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q15
Find Out and Write • Observational Field Study • When the Earth Shook!
[Textbook Activity & Question 10] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q16
Scientific Investigation • Ecosystem Relationships • When the Earth Shook!
[Textbook Activity & Question 11] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q17
Traditional Wisdom & Community Stewardship • Conservation • When the Earth Shook!
[Textbook Activity & Question 12] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q18
Survey & Data Collection • Experiential Inquiry • When the Earth Shook!
[Textbook Activity & Question 13] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q19
Health, Diet & Human Biology • Nutritional Science • When the Earth Shook!
[Textbook Activity & Question 14] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q20
Disaster Preparedness & Climate Resilience • Geography • When the Earth Shook!
[Textbook Activity & Question 15] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q21
Biodiversity & Habitat Adaptations • Wildlife Protection • When the Earth Shook!
[Textbook Activity & Question 16] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q22
Think and Discuss • Environmental Science & Ecology • When the Earth Shook!
[Textbook Activity & Question 17] In 'When the Earth Shook!', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In When the Earth Shook!, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
🌟 NEP 2020 Competency-Based Case Study
The 26 January 2001 Gujarat Earthquake & Seismic Safety
On Republic Day 2001, a catastrophic earthquake measuring 7.7 on the Richter scale struck Bhuj and Kutch in Gujarat, flattening thousands of brick buildings within minutes. In contrast, many traditional circular mud houses with conical thatch roofs ('Bhunga') survived with minimal damage.
Analytical Task: Explain why traditional circular Bhunga houses resisted earthquake shocks better than unreinforced brick buildings, and list three emergency actions to take during an earthquake.
Evaluation & Model Answer:
Why Circular Bhungas Resisted Earthquake Shocks:
The circular shape of traditional Kutch Bhungas has no right-angled corners where stress concentrates. Seismic shockwaves distribute evenly across the continuous curved mud-and-bamboo perimeter, allowing the structure to flex without wall collapse. In contrast, rigid rectangular brick walls with heavy cement roofs shattered under lateral ground shaking.
Three Essential Earthquake Emergency Actions:
1. Drop, Cover, and Hold On: If indoors, drop beneath a sturdy wooden table or desk and hold onto its legs until shaking completely stops.
2. Stay Clear of Heavy Overhead Objects: Move away from glass windows, chandeliers, bookcases, and brick parapets.
3. Move to Clear Open Ground: If outdoors, move swiftly into an open playground or field away from tall buildings, electric power lines, and billboards.
Rubric: 2.5 Marks for circular structural engineering analysis + 2.5 Marks for three scientific safety steps = 5 Marks