Write a factual description, in not more than 100 words, of a working model of 'Save Your Earth' that you have prepared for your school's Earth Day Exhibition.
Write a factual description, in not more than 100 words, of a working model of 'Save Your Earth' that you have prepared for your school's Earth Day Exhibition.
Official answer
Working Model: Save Your Earth
The 'Save Your Earth' working model demonstrates sustainable urban living. Built on a recycled wooden base, it features a miniature city with a functioning solar panel array that powers LED streetlights. A central water pump illustrates a rainwater harvesting system, channelling water to a small green belt. To depict waste management, colour-coded segregation bins are placed near the residential units. A motorised wind turbine on the outskirts shows renewable energy generation. The model effectively visualises eco-friendly solutions to modern environmental challenges, emphasising conservation through interactive, functioning components and renewable energy technology.
Marking scheme
- 1.1 mark for Heading/Introduction (model name and what it represents).
- 2.2 marks for physical description and working components (at least 2-3 functional parts described).
- 3.1 mark for language coherence, factual tone, and adherence to 100-word limit.
Hint
Describe at least two moving or functional parts of the model and use technical terms for materials and components.
Quick oral answer
My working model demonstrates sustainable urban living with a solar-powered LED system, a rainwater harvesting pump, color-coded waste bins, and a motorized wind turbine. Each component is functional, showing renewable energy and conservation solutions on a recycled wooden base.
Common mistakes
- 1.Using creative or emotional language ('This beautiful model will save our precious planet!') instead of factual, objective descriptions of components and their functions.
- 2.Failing to describe the 'working' aspect of the model -- students describe a static display or poster rather than mentioning functional parts like pumps, motors, or electrical circuits.
- 3.Exceeding the 100-word limit by adding unnecessary adjectives or repeating the same point, which shows poor conciseness skills and costs marks under expression.
Analysis and explanation
This question tests the CBSE factual description format, applied to a 'working model' for a science/EVS exhibition.
Concept
- A factual description is objective, detail-oriented prose with no first-person narrative ('I made...') and no literary embellishment.
- The marking scheme awards 1 mark for heading/introduction, 2 marks for physical description and working components, and 1 mark for language/coherence.
Structure that scores well
- Start with a heading and one line naming what the model represents.
- Describe the base/structure (materials, layout).
- Detail 3-4 working components and what each one does.
- Close with the model's purpose/message.
Common mistakes
- Ignoring the word 'working' — describing a static poster or painted diorama instead of components that actually move or function (a solar panel lighting LEDs, a pump circulating water, a motorised turbine).
- Wasting words on filler ('it is very beautiful', 'everyone liked it') instead of precise technical detail ('recycled wooden base', 'rainwater harvesting system', 'colour-coded segregation bins').
- Overshooting the 100-word limit or slipping into first-person narration.
Real-world connection
- This mirrors how science-fair project reports and product spec sheets are written in real life — factual, component-by-component, purpose-driven.
Interesting facts
Earth Day was first celebrated on April 22, 1970, when 20 million Americans protested environmental degradation, leading to the creation of the US Environmental Protection Agency (EPA) and landmark laws like the Clean Air Act.
India generates over 62 million tonnes of solid waste annually (2023 data), but only about 20% is processed or recycled, making waste management models like the one described particularly relevant for school exhibitions.
The world's first solar-powered school was built in Auroville, India, in 1971, and today India has over 15,000 schools with rooftop solar panels under the PM-KUSUM scheme.
Question details
Q19 of 47 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- English (Communicative)
- Year
- 2025
- Section
- Section B
- Marks
- 4
- Type
- Short Answer
- Chapter
- Writing Skills
- Topic
- Factual Description
- Bloom's level
- apply
- Syllabus topic
- Writing Skills - Factual Description (Short Writing Task, 100 words)
- Updated
- 2026-02-19
- Author
- Padhantu
- Reviewed by
- Padhantu
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Frequently asked questions
What is the difference between a factual description and a creative description?
A factual description is objective and focuses on measurable details -- dimensions, materials, components, and functions. A creative description uses literary devices like metaphors and emotional language. CBSE asks for factual descriptions in this section.
How do I make my factual description of a 'working model' stand out?
Emphasize the 'working' aspect by describing at least two functional or moving parts (e.g., a pump that circulates water, a solar panel that lights LEDs). This shows the model is not just static but interactive.
Should I include a heading or title for the factual description?
Yes, include a brief heading like the model's name ('Save Your Earth -- Working Model'). This earns you part of the format mark and immediately orients the reader.