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Political Science NCERT Solutions Class 6 Science Chapter 11 – Nature Treasures
Class 6 Science
Last Updated: 31 May 2026
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हिंदी में (Hindi)
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Important Points
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Practice MCQ Questions (68 questions)
Q1. What are Bhoomi and Surya helping Ajji with on a sunny day?
✓ Correct Answer: B
Q2. What is the main source of energy on Earth?
✓ Correct Answer: A
Q3. What are solar panels used for?
✓ Correct Answer: A
Q4. What can be cooked using a solar cooker?
✓ Correct Answer: C
Q5. Why is the Sun important for plants?
✓ Correct Answer: C
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Frequently Asked Questions (FAQ)
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Tough Words (Glossary)
Treasure (of nature)
Meaning: Valuable natural things that benefit life
अर्थ: प्रकृति की धरोहर
"Forests and rivers are treasures of nature."
Enrich
Meaning: To improve the quality of something
अर्थ: समृद्ध करना
"Trees enrich the air with oxygen."
Fertile
Meaning: Able to produce many plants or crops
अर्थ: उपजाऊ
"Fertile soil helps crops grow well."
Shelter
Meaning: A place that provides protection
अर्थ: आश्रय
"Trees give shelter to birds and insects."
Survival
Meaning: Continuing to live or exist
अर्थ: जीवित रहना
"Oxygen is necessary for human survival."
Oxygen
Meaning: A gas in air essential for life
अर्थ: ऑक्सीजन
"We inhale oxygen while breathing."
Nitrogen
Meaning: A gas that makes up most of the air
अर्थ: नाइट्रोजन
"Nitrogen forms 78% of air."
Argon
Meaning: An inert gas found in small amount in air
अर्थ: आर्गन
"Argon is a minor part of air."
Carbon dioxide
Meaning: A gas produced by breathing and burning
अर्थ: कार्बन डाइऑक्साइड
"Plants use carbon dioxide to make food."
Percentage
Meaning: Number of parts per hundred, shown by %
अर्थ: प्रतिशत
"The chart shows the percentage of gases in air."
Rustle
Meaning: A soft sound made by leaves moving
अर्थ: सरसराहट
"Leaves rustle when the wind blows."
Flutter
Meaning: To move or flap quickly
अर्थ: फड़फड़ाना
"Pages flutter when the fan is on."
Wind
Meaning: Moving air
अर्थ: पवन/हवा
"Strong wind can turn the windmill."
Breeze
Meaning: A light gentle wind
अर्थ: सूं-सूं हवा/समीर
"A cool breeze blew in the evening."
Storm
Meaning: A violent weather condition with strong wind
अर्थ: आंधी/तूफ़ान
"A storm can blow branches down."
Pinwheel (Firki)
Meaning: A small wheel of paper that spins in wind
अर्थ: फिरकी
"The pinwheel spins when you run."
Windmill
Meaning: A machine with blades turned by wind
अर्थ: पवनचक्की
"Windmills generate electricity from wind."
Wind farm
Meaning: An area with many windmills
अर्थ: पवन ऊर्जा क्षेत्र
"India has many wind farms."
Trough
Meaning: A long container for animals to drink
अर्थ: चरनी/नांद
"They filled the troughs with water."
Saline
Meaning: Containing salt
अर्थ: लवणीय/खारा
"Sea water is saline and not drinkable."
Freshwater
Meaning: Water without salt, fit for use
अर्थ: मीठा पानी/स्वच्छ जल
"Rivers and lakes have freshwater."
Accessible
Meaning: Easy to reach or use
अर्थ: सुलभ
"Underground water is not always accessible."
Wastage
Meaning: Careless use that causes loss
अर्थ: अपव्यय/बर्बादी
"Fix leaks to reduce water wastage."
Recycle
Meaning: To process and use again
अर्थ: पुनर्चक्रण
"We should recycle wastewater when possible."
Harvesting (water)
Meaning: Collecting and storing rainwater
अर्थ: वर्षा जल संचयन
"Rainwater harvesting saves water."
Pollution
Meaning: Making air or water dirty and harmful
अर्थ: प्रदूषण
"Plastic causes water pollution."
Judiciously
Meaning: In a wise and careful way
अर्थ: समझदारी से
"Use water judiciously at home."
Stepwell
Meaning: A deep well with steps leading down
अर्थ: बावड़ी/वाव
"Stepwells were used to store water."
Scarcity
Meaning: A shortage or lack of something
अर्थ: कमी/अभाव
"Some areas face water scarcity."
Seepage
Meaning: Slow movement of water through soil or walls
अर्थ: रसाव/स्राव
"Stepwells store water from seepage too."
Trench
Meaning: A long, narrow ditch in the ground
अर्थ: खाई/खंदक
"Stones line the trench walls."
Energy
Meaning: The ability to do work or cause change
अर्थ: ऊर्जा
"The Sun provides energy to Earth."
Gratitude
Meaning: Thankfulness
अर्थ: कृतज्ञता
"People offer water to the Sun in gratitude."
Solar panel
Meaning: A device that converts sunlight to electricity
अर्थ: सौर पैनल
"Solar panels power street lights."
Solar cooker
Meaning: A device that cooks food using sunlight
अर्थ: सौर कुकर
"Dal was cooked in a solar cooker."
Solar water heater
Meaning: A device that heats water using sunlight
अर्थ: सौर जल-तापक
"They installed a solar water heater."
Source (of energy)
Meaning: Where energy comes from
अर्थ: स्रोत
"The Sun is the main source of energy."
Herb
Meaning: A small plant with soft stems
अर्थ: औषधीय/छोटी वनस्पति
"Coriander is a common herb."
Shrub
Meaning: A medium-sized woody plant
अर्थ: झाड़ी
"Roses grow on shrubs."
Dense
Meaning: Thick and closely packed
अर्थ: सघन
"Forests have dense growth of trees."
Diversity
Meaning: Variety of different kinds
अर्थ: विविधता
"Forests show great diversity of life."
Regenerate
Meaning: To grow again or be restored
अर्थ: पुनर्जीवित होना
"Forests need time to regenerate."
Van Mahotsav
Meaning: India’s tree-planting festival in July
अर्थ: वन महोत्सव
"Schools plant saplings during Van Mahotsav."
Sacred grove
Meaning: Protected patches of forest linked to faith
अर्थ: पवित्र उपवन
"Sacred groves conserve biodiversity."
Chipko movement
Meaning: Tree-protection movement where people hugged trees
अर्थ: चिपको आंदोलन
"Women led the Chipko movement."
Prevent
Meaning: To stop something from happening
अर्थ: रोकना
"Roots prevent soil from washing away."
Decay
Meaning: To break down naturally
अर्थ: अपघटन/सड़ना
"Fallen leaves decay and form humus."
Recycle (in nature)
Meaning: Natural process of materials being reused
अर्थ: प्राकृतिक पुनर्चक्रण
"Nutrients recycle in the forest."
Pebble
Meaning: A small smooth stone
अर्थ: कंकड़
"Pebbles were found in the soil."
Earthworm
Meaning: A worm that loosens and turns soil
अर्थ: केंचुआ
"Earthworms are farmers’ friends."
Disintegration
Meaning: Breaking into small parts
अर्थ: खंडन/विघटन
"Rocks form soil by disintegration."
Granite
Meaning: A hard rock used in buildings
अर्थ: ग्रेनाइट
"The floor is made of granite."
Sandstone
Meaning: A rock made of sand grains
अर्थ: बलुआ पत्थर
"Sandstone is used in monuments."
Marble
Meaning: A smooth rock used for sculpture
अर्थ: संगमरमर
"The statue was carved from marble."
Slate
Meaning: A fine rock used for roofing
अर्थ: स्लेट पत्थर
"Some roofs are made of slate."
Laterite
Meaning: A reddish soil/rock used as bricks
अर्थ: लेटराइट
"Laterite blocks are used like bricks."
Mineral
Meaning: A natural substance in rocks
अर्थ: खनिज
"Copper is obtained from minerals."
Extract
Meaning: To take out from something
अर्थ: निकालना/उत्खनन करना
"Gold is extracted from ore."
Cosmetics
Meaning: Products used to enhance appearance
अर्थ: सौंदर्य प्रसाधन
"Some cosmetics contain minerals."
Fossil fuels
Meaning: Energy sources like coal, petroleum, gas
अर्थ: जीवाश्म ईंधन
"Cars run on fossil fuels."
Petroleum
Meaning: Thick liquid fuel found underground
अर्थ: पेट्रोलियम/खनीज तेल
"Petroleum gives petrol and diesel."
Natural gas
Meaning: Gas fuel found underground
अर्थ: प्राकृतिक गैस
"CNG is compressed natural gas."
Coal
Meaning: A black solid fuel
अर्थ: कोयला
"Coal is used in power plants."
Compressed Natural Gas (CNG)
Meaning: Natural gas stored under pressure
अर्थ: संपीड़ित प्राकृतिक गैस
"Buses in cities run on CNG."
Liquefied Petroleum Gas (LPG)
Meaning: Gas fuel stored as liquid
अर्थ: द्रवीकृत पेट्रोलियम गैस
"LPG is used for cooking."
Exhausted (resource)
Meaning: Used up completely
अर्थ: समाप्त/खत्म
"Fossil fuels will be exhausted one day."
Alternate (energy) source
Meaning: A different option for getting energy
अर्थ: वैकल्पिक ऊर्जा स्रोत
"Solar power is an alternate source."
Air pollution
Meaning: Dirtying of air by smoke and gases
अर्थ: वायु प्रदूषण
"Vehicles cause air pollution."
Natural resource
Meaning: Useful thing obtained from nature
अर्थ: प्राकृतिक संसाधन
"Water is a natural resource."
Human-made resource
Meaning: Useful thing created by humans
अर्थ: मानव-निर्मित संसाधन
"Bicycles are human-made resources."
Renewable (resource)
Meaning: Can be naturally replaced in short time
अर्थ: नवीकरणीय
"Air and water are renewable resources."
Non-renewable (resource)
Meaning: Cannot be replaced quickly
अर्थ: अ-नवीकरणीय
"Coal is a non-renewable resource."
Judicious use
Meaning: Careful and wise usage
अर्थ: सावधानीपूर्वक उपयोग
"Judicious use of resources is vital."
Conserve
Meaning: To protect and save for future
अर्थ: संरक्षित करना/बचाना
"We must conserve forests and water."
Biodiversity
Meaning: Variety of living organisms
अर्थ: जैव-विविधता
"Forests support rich biodiversity."
Precious
Meaning: Very valuable and important
अर्थ: अनमोल/बहुमूल्य
"Freshwater is precious for life."
Responsible use
Meaning: Using without waste or harm
अर्थ: उत्तरदायी उपयोग
"Practice responsible use of resources."
Skyline
Meaning: The outline of a city against the sky
अर्थ: आकाशरेखा
"The skyline looked hazy due to smoke."
Hazy
Meaning: Not clear; misty
अर्थ: धुंधला
"The air was hazy near the road."
Electric vehicle
Meaning: A vehicle powered by electricity
अर्थ: विद्युत वाहन
"Electric vehicles reduce air pollution."
Judicious (again)
Meaning: Showing good judgement
अर्थ: सूझबूझ वाला
"Be judicious in using electricity."
Sustain
Meaning: To support and keep going
अर्थ: सहारा देना/कायम रखना
"Natural resources sustain life on Earth."
Greed
Meaning: A strong desire for more than needed
अर्थ: लोभ/लालच
"Greed leads to overuse of resources."
Humus
Meaning: Rich, dark soil formed from decayed plants
अर्थ: ह्यूमस/जैविक खाद
"Humus makes the soil fertile."
Erode
Meaning: To wear away by wind or water
अर्थ: कटाव करना
"Roots reduce soil erosion."
Responsibly
Meaning: In a way that shows care and duty
अर्थ: जिम्मेदारी से
"Use fossil fuels responsibly."
Stream
Meaning: A small, flowing body of water
अर्थ: छोटी धारा/नाला
"A stream flowed near the village."
Western Ghats
Meaning: Mountain range in western India
अर्थ: पश्चिमी घाट
"The Western Ghats have rich forests."