Yeh book पृथ्वी हमारा आवास (Prithvi Hamara Aawas) Class 6 ke liye NCERT dwara taiyar ki gayi hai. Isme hum prithvi, solar system, globe, maps, latitude-longitude, prithvi ki gati aur mahadeshon ke baare mein padhenge. Sab kuch Hinglish mein samjhaaya gaya hai taaki aapko asaani ho.
Har chapter ke important points, definitions aur short notes diye gaye hain. Aaiye hum prithvi ko samjhe!
Yeh book NCERT dwara class 6 ke students ke liye likhi gayi hai. Iska naam पृथ्वी हमारा आवास (Prithvi Hamara Aawas) hai. Isme total 6 chapters hain jo humein prithvi aur uske aas-paas ke baare mein batate hain. Yahan hum sabhi chapters ka summary Hinglish mein de rahe hain.
Humare solar system mein 8 planets hain: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. Prithvi (Earth) ek aisa planet hai jahan par jeevan possible hai. Prithvi se 4.5 billion saal pehle bani. Chandrama (Moon) prithvi ka ekmatra natural satellite hai. Surya (Sun) ek star hai jo hamare solar system ka centre hai. Key points: Prithvi ko 'Blue Planet' bhi kaha jaata hai kyunki yahan paani bahut hai. Solar system aur bhi saare stars aur planets humein brahmand (universe) ka hissa lagte hain.
Globe prithvi ka ek chota model hai. Isme hum latitude aur longitude ke parallel circles aur meridians dekhte hain. Latitude: equator se north-south ki taraf measure kiya jaata hai. Important latitudes: Tropic of Cancer (23.5°N), Tropic of Capricorn (23.5°S), Arctic Circle (66.5°N), Antarctic Circle (66.5°S). Longitude: Prime Meridian (0° longitude) Greenwich se guzarta hai. Earth ko 24 time zones mein baanta gaya hai. Standard time IST (Indian Standard Time) 82.5°E longitude ke hisaab se hai.
Prithvi ki do mukhya gatiyaan hain: Rotation (ghurnan) aur Revolution (parikrama). Rotation: Prithvi apne aks (axis) par ghumnati hai jisse din aur raat hote hain. Ek rotation 24 ghante mein hota hai. Revolution: Prithvi suraj ke charon aur ek ellipitical orbit mein ghoomti hai jisse saal banta hai. Isse hi mausam (seasons) badalte hain. Jab prithvi ka aks (23.5°) jhuka hua hai, tab solstice aur equinox hote hain. Summer solstice (21 June) ke din prithvi ka uttari gola suraj ki taraf jhuka hota hai. Winter solstice (22 Dec) ko dakshini gola jhuka hota hai. Equinox (21 March aur 23 Sept) ko din aur raat barabar hote hain.
Maps prithvi ke surface ka chota representation hai. Maps ke 3 prakar hain: Political Maps (simaon aur raajyon ko dikhate hain), Physical Maps (pahad, nadi, samundar), Thematic Maps (kisi ek topic ke baare mein). Map ke anivarya components hain: Scale (distance ka ratio), Direction (north-south-east-west), Symbols (rangi aur nishaan). Atlas maps chhoti scale par puri prithvi ko dikhate hain jabki large-scale maps sheher ya gaon ko. Important: Map reading ke liye directions aur symbols samajhna zaroori hai.
Prithvi ke char pramukh domains hain: Lithosphere (sthalamandal - chattane, mitti), Hydrosphere (jala mandal - samundar, nadi, jheel), Atmosphere (vayu mandal - hawa), Biosphere (jeev mandal - jeevan wala hissa). Lithosphere mein pahad (mountains), pathar (plateaus), aur maidaan (plains) aate hain. Hydrosphere mein 71% prithvi ka surface paani hai. Atmosphere hawa se bana hai jo prithvi ko suraj ki harmful radiations se bachata hai. Biosphere hi wo hissa hai jahan jeevan possible hai. Example: Amazon forest biosphere ka ek hissa hai.
Is chapter mein hum prithvi ke alag-alag sthalroop (landforms) ke baare mein padhte hain. Mountains (pahad): Uchai wali sthal aakritiyan. Tin prakar: Fold mountains (Himalaya), Block mountains (Vindhya), Volcanic mountains (Kilauea). Plateaus (pathar): Samatal upari hissa lekin khaai wali jagah. Dekkhan plateau bharat mein ek example hai. Plateaus minerals se bhare hote hain. Plains (maidaan): Samatal aur upjaoo sthal. Yahan kheti hoti hai aur zyada log rehte hain. Gangetic plains ek example hai. In landforms ke beech mein nadi, glacier, hawa, aur paani ka kataav kaam karta hai. Erosion aur deposition se naye sthalroop bante hain.
Yeh notes aapko पृथ्वी हमारा आवास Class 6 NCERT book ki taiyari mein madad karenge. Hinglish mein samajhna aasan hai. Aap prashn aur uttar bhi aise hi likh sakte hain. Shubh adhyayan!
