CBSE Class 10 All Subjects Revision Worksheet Set 08

Project Theme: Girl or boy, both bring joy

General Guidelines for the Holiday Homework Project

• There is no limit to the length of the project in numbers of pages.
• It should be hand written on A4 size coloured sheets.
• Use all possible sources to collect information (Newspaper, Magazine, Encyclopedia, Internet, personal experiences etc.).
• Make your project as interesting as you can by adding pictures, personal impressions, and anecdotes, etc.
• Draw or paste suitable pictures to add to the visual appeal of the article.
• The file cover should reflect the title and student information.
• The folder should include:
  • Table of contents
  • Introduction
  • Contents
  • Conclusion
  • Acknowledgements/Bibliography
  • Assessment form - Self, peer and Teacher
• The project will be assessed on:
  • Content: 4
  • Research: 4
  • Presentation: 4
  • Creativity: 3

ENGLISH

Question 1. Cut out articles from a magazine or newspaper related to discrimination against girl child / women and stick them on an A4 size sheet.
Answer: For this segment of your portfolio, collect newspaper clippings from publications like The Hindu, The Times of India, or Indian Express. Focus on articles addressing topics such as the gender wage gap, unequal access to secondary education in rural areas, or reports on child marriage. Below is a compiled summary of the core themes to include on your A4 sheet alongside your physical clippings:

• Economic Disparity: Highlight articles discussing how women are frequently underpaid compared to men for identical labor, depicting systemic financial inequality.
• Social Hurdles: Feature editorial pieces discussing the societal pressures that prioritize a male child's higher education over a female child's.
• Safety and Mobility: Focus on reports regarding public safety issues that restrict young women from commuting freely to colleges or workspaces.

In simple words: Collect news articles showing how girls and women face unfair treatment in education, pay, or safety, and glue them to your sheet with short explanatory notes.

Exam Tip: Use vibrant borders around each clipping and write a two-sentence personal reflection underneath each article to score maximum marks on presentation.

Question 2. Identify and cut out 2 posters or advertisements related to the girl child issued by the Delhi Government and stick them on an A4 size sheet.
Answer: You can identify and paste two prominent campaigns run by the Delhi Government and central ministries:

1. The Delhi Ladli Scheme advertisement: This scheme aims to promote birth registration, prevent female foeticide, and provide academic security to girl children through financial aid deposited at milestones like entering Class VI, IX, X, and XII.
2. Beti Bachao Beti Padhao campaign posters: Advertisements focusing on eliminating gender-biased sex selection and ensuring the survival, protection, and robust education of the girl child.

On your project sheet, document the following key goals for these campaigns:

• Eradicating Bias: Actively preventing pre-birth gender selection and safeguarding newborn girls.
• Financial Empowerment: Offsetting the educational costs of young girls through government-backed savings accounts to reduce the perceived financial burden on parents.

In simple words: Find and paste two government ads about saving and educating girls, then write down how these schemes help families send girls to school.

Exam Tip: Underline the key slogans of the government ads, such as "Education is our right," to show the examiner that you understood the core message.

Question 3. Visit an NGO dealing with women issues and interview the head of the NGO asking relevant questions, for example:
(a) The women issues dealt with
(b) Area covered by them
(c) Problems faced by them while dealing with such issues
(d) Their success rate, etc.
Answer: Below is a model transcript of an interview conducted with the Director of "Nari Shakti Sansthan," an NGO located in New Delhi:
Student: Good afternoon, Ma'am. Thank you for taking out the time to speak with me. Could you brief me on the main issues your organization tackles?
Director: Good afternoon. Our primary focus is on providing legal counseling to victims of domestic violence, organizing skill-based vocational training (like sewing, basic computing, and handicrafts), and facilitating adult literacy programs in semi-urban pockets.
Student: Which geographical areas does your work cover?
Director: We mainly cover the resettlement colonies and urban slums in West and South-West Delhi, such as Dwarka sector outposts and nearby rural borders.
Student: What are the biggest bottlenecks you face in your day-to-day operations?
Director: The most significant barrier is the initial resistance from families. Often, male relatives are reluctant to let women attend our training sessions. Additionally, raising consistent long-term funds to provide stipends during training is a major hurdle.
Student: How would you describe your overall success rate?
Director: Rather than a numerical metric, we measure success by economic self-reliance. Over the last three years, we have trained over 450 women, out of which nearly 60% have secured stable livelihoods or started independent home-run businesses.
In simple words: Interview a local women's NGO leader about their work, the regions they serve, the family resistance they face, and how they help women become self-reliant.

Exam Tip: When writing your interview transcript, present it in a clear Q&A dialogue format with distinct headings for the speaker names.

Question 4. Write a letter to the Editor of a National Daily appreciating the work done by the NGO. Also highlight the problems faced by them, along with some suggestions to resolve the problems.
Answer:
B-4, Vasant Vihar,
New Delhi - 110057

October 12, 2024

The Editor,
The Times of India,
New Delhi - 110001

Subject: Commending Grassroots Efforts of Women-centric NGOs and Addressing Operational Challenges

Sir/Madam,

Through the columns of your esteemed newspaper, I wish to draw public attention to the commendable work being carried out by grassroots organizations like 'Nari Shakti Sansthan' in West Delhi. During a recent visit, I observed how they are transforming lives by training marginalized women in tailoring and IT skills, giving them a real shot at financial independence.

However, these organizations face steep structural roadblocks. The lack of sustainable institutional funding and continuous community resistance prevent them from expanding their reach. Many families still withdraw women from classes midway due to domestic pressures.

To resolve these challenges, the local government should partner with corporate houses to channel CSR funds directly into these certified NGOs. Furthermore, community workshops involving male family members must be organized to change minds about female employment. Empowering an NGO of this caliber directly strengthens the local economy.

Yours faithfully,
(Student Signature)
A Class X Student
In simple words: Write a letter to a newspaper editor praising a women's welfare group, detailing their funding struggles, and suggesting government partnerships to help them.

Exam Tip: Strictly follow the formal letter format (Sender's address, Date, Receiver's address, Subject, Salutation, Body, Subscription) to score full marks.

MATHEMATICS

Question 1. Represent the Statistics available in case of genders on various issues like Health, Education, Job Profiles, Infant Mortality using Bar graphs and pie-charts as required.
Answer: To represent gender-based statistics dynamically, we use reliable, standard Indian demographic data. Below are the statistical representations and data tables for the project:

1. Education: Literacy Rates in India (by Gender)

2. Infant Mortality Rate (IMR - deaths per 1000 live births)

3. Job Profiles: Female Labor Force Participation Rate (LFPR %)

A pie chart representing the total active female population versus those out of the formal labor force (based on an approximate 37% formal employment/labor participation rate):

In simple words: This section uses clean graphs and simple charts to visually compare male and female literacy rates, mortality figures, and job employment percentages in India.

Exam Tip: Label the axes of your bar graphs clearly with units like percentage (%) or per 1,000, and use contrasting colors to make the comparison visually striking.

SCIENCE

Question a. It is said that in human beings sex of an individual is largely genetically determined. That means that the genes inherited from our parents decide whether we will be boys or girls. But we also know that similar gene sets are inherited from both parents. If that is the case how can genetic inheritance determine sex?
Answer: While most human chromosomes exist in perfect matching pairs (autosomes), there is one unique pair known as the sex chromosomes. Females possess a perfect matching pair of X chromosomes, designated as XX. Males have a mismatched pair containing one normal-sized X chromosome and a much smaller counterpart called the Y chromosome, designated as XY. All gametes (eggs) produced by a mother carry an X chromosome. However, the gametes (sperm) produced by a father are of two types: 50% carry an X chromosome and 50% carry a Y chromosome. The sex of the progeny is determined by which sperm fertilizes the ovum:

• If an ovum carrying an X chromosome is fertilized by a sperm carrying an X chromosome, the zygote develops into a female child (XX).
• If an ovum carrying an X chromosome is fertilized by a sperm carrying a Y chromosome, the zygote develops into a male child (XY).

Thus, genetic inheritance determines sex based on the specific sex chromosome inherited from the paternal side.
In simple words: Mothers always pass an X chromosome to their babies. Fathers can pass either an X or a Y. If the baby gets an X from the father, it's a girl. If it gets a Y, it's a boy.

Exam Tip: Draw a clean genetic cross chart (Punnett square) showing fertilization combination (\( XX \times XY \)) to illustrate the 50:50 ratio of male and female offspring.

Question b. Is there any disparity in the number of boys and girls at the time of birth? Substantiate your answer with facts and figures.
Answer: Yes, there is a distinct disparity in the number of male and female births. Biologically, the natural sex ratio at birth is slightly skewed, averaging about 105 male births for every 100 female births worldwide. This biological margin occurs naturally to offset the higher mortality rates males tend to experience later in life. However, in countries like India, socio-cultural biases create a much wider, unnatural disparity. According to national census data, the child sex ratio (ages 0 - 6) has declined in recent decades. The Child Sex Ratio was recorded as:

• 927 girls per 1000 boys in the 2001 Census.
• 918 girls per 1000 boys in the 2011 Census.

This severe gap is caused by illegal sex-selective practices and family preference for male heirs, highlighting a major social challenge that goes beyond biological factors.
In simple words: Naturally, slightly more boys are born than girls. But due to social bias, the ratio in India has dropped to 918 girls for every 1000 boys.

Exam Tip: Explicitly distinguish between "natural biological disparity" and "anthropogenic/societal disparity" to show a deeper scientific understanding.

Question c. Gather information about various sources of energy. Prepare a flow chart to classify these sources of energy.
Answer: Energy sources are fundamentally categorized based on their depletion rate and environmental replenishment. Below is the structured classification flow chart:

• Sources of Energy
  • I. Renewable Sources (Non-Conventional) - replenishment occurs continuously in nature.
    • Solar Energy (sunlight)
    • Wind Energy (atmospheric currents)
    • Hydroelectric Energy (flowing water)
    • Biomass and Biogas (organic wastes)
  • II. Non-Renewable Sources (Conventional) - limited reserves that deplete with usage.
    • Coal (combustible sedimentary rock)
    • Petroleum (crude oil products)
    • Natural Gas (methane deposits)
    • Nuclear Fuels (Uranium ore)

In simple words: Energy sources are split into two groups: Renewable (like solar and wind that never run out) and Non-Renewable (like coal and oil that eventually deplete).

Exam Tip: Use a double-lined box hierarchy or block diagrams to present this flow chart cleanly on your A4 sheet.

Question d. Give the merits and demerits of each source and select the best source of energy on this basis.
Answer:

Comparative Analysis of Energy Sources:

Conclusion (The Best Source): Based on this analysis, **Solar Energy** is the best sustainable source of energy for the future. Although its initial installation is expensive, its abundance and zero emissions make it the most viable long-term alternative to fossil fuels.
In simple words: While fossil fuels are reliable but pollute, solar is clean and unlimited. Solar energy is the best overall choice because it does not harm the environment.

Exam Tip: Create a table format like the one above to compare these sources side-by-side, which makes your work easy for examiners to evaluate quickly.

Question e. What is the effect of these sources of energy on the health of women in rural India? Do you think use of bio gas has helped in improving the health conditions of females in rural India? Support your answer with facts and figures about the same.
Answer: In rural India, women bear the brunt of traditional energy sourcing. Gathering firewood and dried cow dung cakes consumes nearly 4 - 6 hours of physical labor daily. Burning these solid biomass fuels in poorly ventilated, traditional stoves (chulhas) releases dangerous amounts of carbon monoxide, particulate matter, and formaldehyde. According to World Health Organization (WHO) studies, inhaling this indoor smoke is equivalent to smoking 400 cigarettes an hour. It leads to severe respiratory illnesses, chronic obstructive pulmonary disease (COPD), cataracts, and low birth weight in infants. Has Biogas helped? Yes, switching to biogas has significantly improved women's health:

• 90% Reduction in Smoke: Biogas burns cleanly with a blue flame, virtually eliminating indoor air pollution and protecting women's lungs and eyes.
• Time Savings: Generating gas at home saves hours spent gathering wood, reducing physical strain and injury.
• Environmental Health: The byproduct is sterile, weed-free organic slurry, which replaces chemical fertilizers and reduces skin infections.

Studies show that rural households using biogas report a 60% decline in respiratory and eye ailments among women, proving its effectiveness.
In simple words: Burning firewood in traditional kitchens causes severe lung diseases for rural women. Biogas burns cleanly, reducing indoor smoke by 90% and protecting their health.

Exam Tip: Mention the term "COPD (Chronic Obstructive Pulmonary Disease)" and specify the "90% particulate matter reduction" to add technical weight to your answer.

हिंदी (HINDI)

Question. स्वतंत्रता संग्राम में भाग लेने वाली किन्हीं चार महिलाओं के योगदान के विषय में जानकारी। मुख्य बिंदु:- केवल लिखित रूप में परियोजना बनानी है। चित्रों को चिपकाना है। कार्य परियोजना 3 से 4 पृष्ठ की होनी चाहिए।
Answer: भारतीय स्वतंत्रता संग्राम में महिलाओं का योगदान अद्वितीय और प्रेरणादायक रहा है। यहाँ चार प्रमुख वीरांगनाओं का संक्षिप्त जीवन-परिचय और देश के प्रति उनका योगदान प्रस्तुत है:

1. रानी लक्ष्मी बाई (झांसी की रानी)

• क्रांति का नेतृत्व: सन् 1857 के प्रथम स्वतंत्रता संग्राम में रानी लक्ष्मी बाई ने अंग्रेजों के विरुद्ध विद्रोह का शंखनाद किया। 'दत्तक पुत्र' के अधिकार को ब्रिटिश साम्राज्य द्वारा ठुकराए जाने के बाद उन्होंने दृढ़ता से घोषणा की - "मैं अपनी झांसी नहीं दूंगी।"
• वीरता का उदाहरण: उन्होंने युद्ध के मैदान में अपने छोटे बालक को पीठ पर बांधकर दोनों हाथों में तलवार लेकर अंग्रेजों से भीषण युद्ध किया और वीरगति प्राप्त की।

2. सरोजिनी नायडू (भारत कोकिला)

• राजनैतिक सक्रियता: वे एक प्रखर कवयित्री और निडर नेता थीं। वर्ष 1925 में वे कांग्रेस की पहली भारतीय महिला अध्यक्ष चुनी गईं।
• आंदोलनों में भूमिका: महात्मा गांधी के 'नमक सत्याग्रह' (दांडी यात्रा) में उन्होंने सक्रिय भागीदारी निभाई। स्वतंत्रता के पश्चात वे स्वतंत्र भारत की पहली महिला राज्यपाल (उत्तर प्रदेश) बनीं।

3. अरुणा आसफ अली (क्रांति की नायिका)

• ग्वालिया टैंक मैदान की घटना: वर्ष 1942 के 'भारत छोड़ो आंदोलन' के दौरान जब सभी बड़े नेताओं को गिरफ्तार कर लिया गया था, तब उन्होंने मुंबई के ग्वालिया टैंक मैदान में तिरंगा फहराकर आंदोलन को नई दिशा दी।
• भूमिगत सक्रियता: उन्होंने पुलिस की पकड़ से दूर रहकर भूमिगत होकर स्वतंत्रता की लौ जलाए रखी। उन्हें मरणोपरांत भारत के सर्वोच्च नागरिक सम्मान 'भारत रत्न' से नवाजा गया।

4. बेगम हज़रत महल (अवध की बेगम)

• अवध की रक्षा: सन् 1857 के गदर में जब उनके पति नवाब वाजिद अली शाह को कैद कर लिया गया, तब उन्होंने अवध की कमान अपने हाथों में ली और लखनऊ को अंग्रेजों के चंगुल से मुक्त कराया।
• रणनीति: उन्होंने हिंदू और मुस्लिम सिपाहियों को एकजुट करके ब्रिटिश सेना के खिलाफ मोर्चा संभाला और साहस की अद्भुत मिसाल पेश की।

In simple words: स्वतंत्रता संग्राम में रानी लक्ष्मीबाई, सरोजिनी नायडू, अरुणा आसफ अली और बेगम हज़रत महल ने साहस के साथ अंग्रेजों का मुकाबला किया और देश की आजादी की नींव रखी।

Exam Tip: प्रत्येक महिला स्वतंत्रता सेनानी की जानकारी के साथ उनका एक चित्र अवश्य चिपकाएं और उनके प्रसिद्ध नारों को रेखांकित करें।

FRENCH

Question 1. Comparez les rôles des femmes en France avant et après la Revolution française .Vous pouvez aussi collez les images des femmes de lendemain et d’aujourd’hui.
Answer: La situation des femmes en France : Avant vs Après la Révolution

Avant la Révolution Française (L'Ancien Régime):

Avant 1789, la société française était très patriarcale. Les femmes étaient privées de tous droits politiques et juridiques. Elles étaient considérées comme des mineures perpétuelles, d'abord sous la tutelle de leur père, puis sous celle de leur époux. Leurs rôles étaient strictement limités à la sphère domestique: s'occuper du ménage, élever les enfants et travailler dur dans les champs ou les ateliers sans indépendance financière.

Après la Révolution Française (Le Changement et les Limites):

La Révolution a ouvert de nouvelles portes. Les femmes ont participé activement aux manifestations (comme la Marche sur Versailles en octobre 1789) et ont créé des clubs politiques. Des figures comme Olympe de Gouges ont rédigé la "Déclaration des droits de la femme et de la citoyenne". Bien que le Code Napoléon de 1804 ait plus tard réaffirmé l'obéissance de la femme à son mari, la Révolution a semé les graines de l'égalité moderne. Aujourd'hui, les femmes en France jouissent d'une égalité juridique totale, occupent des postes clés au gouvernement et mènent des carrières diversifiées.
In simple words: Avant la Révolution, les femmes n'avaient aucun droit. Pendant et après la Révolution, elles ont lutté pour l'égalité, ouvrant la voie aux droits des femmes d'aujourd'hui.

Exam Tip: structurez votre réponse en utilisant des connecteurs logiques comme "En revanche" ou "Par contre" pour marquer clairement la comparaison.

Question 2. Dessinez et coudrez quelques deux coûtumes des femmes françaises. Vous pouvez choisir quelques époque – 1800, 1900, 2000 ou 2010. Utilisez les vieux journaux , les tissus ou quelques matières de recyclage pour faire les coûtumes.
Answer: To fulfill this creative assignment, you can present a layout showing two distinctive French women's clothing styles using recycled materials:

1. Époque 1800 (The Empire Silhouette):
   • Design Description: High-waisted dress fitting just under the bust, falling into a long, loose, straight skirt.
   • Recycled Materials Used: Gathered old white cotton sheets or lightweight newspapers folded in neat pleats, held with a blue ribbon under the bust line.
2. Époque 2010 (The Modern Chic Silhouette):
   • Design Description: A classic, clean-cut tailored trench coat paired with a simple scarf, capturing modern Paris fashion.
   • Recycled Materials Used: Brown packing paper crafted into a structural miniature coat, with fabric scraps or colorful ribbons serving as the modern scarf.

In simple words: Create and attach small models of French outfits from 1800 (high-waisted dress) and 2010 (modern trench coat) on your sheets using old newspapers or cloth scraps.

Exam Tip: Label the components of the drawings in French (e.g., "la robe", "le ruban", "le manteau") to demonstrate language proficiency.

Question. भारतीय समाज में संवेदनात्मक लिंग भेद के परिदृश्य दो उदाहरण देकर संस्कृत भाषा में पाँचों लकार (काल) का प्रयोग करते हुए चित्र सहित लिखिए।
Answer: भारतीय समाजे लिंगभेदस्य निवारणाय संवेदनशीलता आवश्यकी अस्ति। अत्र द्वे उदाहरणे दत्तानि सन्ति यत्र पञ्चानां लकाराणां प्रयोगः कृतः:

उदाहरणम् १: कन्याशिक्षायाः क्षेत्रे (In the field of girl child education)

• लट् लकारः (वर्तमान काल): अद्यतन समाजे अपि केचन जनकाः कन्यां विद्यालयं न प्रेषयन्ति। (आज के समाज में भी कुछ पिता लड़कियों को स्कूल नहीं भेजते हैं।)
• लृट् लकारः (भविष्य काल): यदा वयं सर्वान् समानान् मन्येम तदा एव देशः पतिष्यति/उन्नमिष्यति। (जब हम सबको समान मानेंगे तभी देश उन्नति करेगा।)
• लङ् लकारः (भूत काल): पुरा समाजः नारीणां विकासे बाधां अकरोत्। (प्राचीन काल में समाज ने महिलाओं के विकास में बाधा उत्पन्न की थी।)
• लोट् लकारः (आज्ञा काल): हे समाज! कन्याभ्यः अपि सम्यक् अवसरं यच्छन्तु। (हे समाज! कन्याओं को भी समान अवसर प्रदान करो।)
• विधिलिङ् लकारः (चाहिए अर्थ): सर्वकारीय नीतिभिः समाजः भेदभावं त्यजेत्। (सरकारी नीतियों द्वारा समाज को भेदभाव छोड़ देना चाहिए।)

उदाहरणम् २: गृहकार्यविभागे असमानता (In the division of household chores)

• लट् लकारः (वर्तमान काल): बालकाः क्रीडन्ति परं बालिकाः तु गृहे कार्यं कुर्वन्ति। (लड़के खेलते हैं लेकिन लड़कियां घर पर काम करती हैं।)
• लृट् लकारः (भविष्य काल): नूतनः विचारः भेदभावं नाशयिष्यति। (नया विचार भेदभाव का नाश करेगा।)
• लङ् लकारः (भूत काल): माता सुताय एव अल्पाहारं पूर्वं अयच्छत्। (माता ने पुत्र को ही पहले नाश्ता दिया था।)
• लोट् लकारः (आज्ञा काल): गृहे सर्वे भ्रातरः भगिनीनां साहाय्यं कुर्वन्तु। (घर पर सभी भाई बहनों की सहायता करें।)
• विधिलिङ् लकारः (चाहिए अर्थ): वयं सर्वे गृहे कार्यविभागे समतां रक्षेम। (हम सभी को घर में कार्य विभाजन में समानता रखनी चाहिए।)

In simple words: संस्कृत में पाँचों लकारों का प्रयोग करके दिखाया गया है कि कैसे समाज में कन्याओं की शिक्षा और घर के कामों में लड़कों और लड़कियों के बीच भेदभाव होता है।

Exam Tip: संस्कृत वाक्यों में धातु रूपों (जैसे कुर्वन्ति, त्यजेत्) को अलग रंग की कलम से रेखांकित करें ताकि परीक्षक लकारों के प्रयोग को स्पष्ट देख सकें।

Topic: Safe Construction Practices

Question 1. What are the effects of Earthquake / cyclones on buildings?
Answer: Natural disasters place immense stress on civil infrastructure, causing severe damage when buildings are not engineered to withstand these loads:

• Effects of Earthquakes:
  • Ground Shaking & Shear Failure: Earthquakes produce violent horizontal and vertical ground motions. The inertia of the building's roof and upper floors resists this movement, creating high shear forces. This can cause non-load-bearing brick walls to crack and load-bearing columns to fail.
  • Liquefaction: In areas with loose, saturated soils, strong shaking can cause the soil to behave like a liquid. This leads to foundation failures, causing buildings to tilt or sink.
• Effects of Cyclones:
  • Aerodynamic Wind Loads: High-velocity winds create positive pressure on the windward side of a building and negative pressure (suction) on the leeward side and roof. This suction can easily rip off lightweight roofs and damage outer walls.
  • Debris Impact: Wind-borne debris acts like projectiles, breaking windows and structurally weakening building facades.

In simple words: Earthquakes shake buildings sideways, cracking walls and destabilizing foundations. Cyclones use high-speed winds to create a vacuum effect that pulls off roofs and shatters windows.

Exam Tip: Clearly distinguish between the forces involved - earthquakes exert "seismic inertia loads" (primarily horizontal), while cyclones exert "aerodynamic wind loads" (lift and pressure).

Question 2. Can the impact of chosen disaster be lessened / minimized by following safe constructional practices? How?
Answer: Yes, the impact of natural disasters can be significantly reduced by applying smart engineering and adopting safe construction techniques:

• For Earthquakes:
  • Ductile Detailing: Using high-quality steel reinforcement in concrete beams and columns ensures that the structure bends under seismic pressure rather than snapping suddenly, giving residents time to evacuate.
  • Shear Walls: Incorporating thick reinforced concrete walls at strategic points helps absorb horizontal forces, preventing structural collapse.
  • Base Isolation: Placing flexible pads or bearings made of rubber and steel at the building's foundation helps detach the structure from ground movements.
• For Cyclones:
  • Aerodynamic Roof Designs: Replacing flat or overhanging roofs with hipped roofs (sloping on all four sides at a 30 to 45-degree angle) reduces wind resistance and prevents the roof from being ripped off.
  • Strong Anchoring: Securely anchoring roofs to walls and walls to foundations prevents wind lift from separating structural elements.

In simple words: Yes, buildings can survive disasters if they are built with strong, flexible steel frames to absorb earthquake shocks, and sloped roofs to let heavy cyclone winds pass over safely.

Exam Tip: Highlight the importance of following local building safety codes, such as those set by the Bureau of Indian Standards (BIS), in your project report.

Question 3. Draw a configuration of a building that can withstand the aforesaid disaster. Also suggest how existing buildings can be made earthquake safe.
Answer: Below is a structural design diagram illustrating key earthquake and cyclone-safe configurations: Retrofitting Techniques for Existing Buildings: Existing buildings that were not originally built to resist earthquakes can be strengthened using these retrofitting techniques:

• Concrete Jacketing: Wrapping existing concrete columns and beams in a new layer of steel mesh and high-strength concrete to increase load capacity.
• Adding Steel Bracing: Installing diagonal steel braces (like the 'X' patterns shown in the diagram above) within the existing building frame to improve lateral stability.
• Epoxy Grouting: Injecting specialized high-strength polymers into structural cracks in walls to restore their original strength.

In simple words: The diagram shows a building with flexible shock absorbers at the base, diagonal steel bracing on the sides, and a sloped roof. Old buildings can be retrofitted by wrapping their columns in steel and concrete (jacketing).

Exam Tip: Draw this diagram by hand on your A4 sheet, using clear labels pointing to the base isolators, diagonal braces, and sloped roof to maximize your score.

Question 4. Give a case study of any city where proper planning of buildings have protected people from extensive damage.
Answer:

Case Study: Tokyo, Japan - A Model of Seismic Resilience

Tokyo sits in one of the most active earthquake zones in the world. However, the city has successfully minimized casualties and structural damage through strict building codes and innovative planning:

• The 2011 Tohoku Earthquake: In March 2011, a massive 9.0 magnitude earthquake struck Japan, causing intense ground shaking in Tokyo. Despite the force of the tremor, not a single modern high-rise in Tokyo collapsed, and casualties in the city were extremely low.
• How Tokyo Achieved This:
  • Flexible, Shock-Absorbing Skyscraper Designs: Tall buildings like the Roppongi Hills Mori Tower use advanced oil dampers that act as shock absorbers, moving back and forth to dissipate seismic energy.
  • Strict Regulatory Enforcement: Japan's Building Standard Act requires constant updates to construction standards. Every building must undergo mandatory inspections to ensure compliance before any permits are issued.

Tokyo's success proves that smart engineering, strict code enforcement, and proactive planning can prevent even major earthquakes from turning into humanitarian disasters.
In simple words: Despite being hit by a massive 9.0 magnitude earthquake in 2011, Tokyo's modern buildings stood strong. This was thanks to strict safety laws and shock-absorbing systems built into their skyscrapers.

Exam Tip: Mention the "2011 Tohoku Earthquake (9.0 magnitude)" in your case study to show that your research is grounded in real historical events.

SELF ASSESSMENT SHEET

In simple words: Fill out the self-evaluation columns in this table once you finish your project to review your research, presentation, and timeliness.

Exam Tip: Complete this self-assessment sheet honestly before turning in your folder, as self-reflection is highly valued in project-based grading.