Chapter 12: Prithvi, Chaand aur Sooraj
Sooraj chalta hai ya hum? Is chapter mein jhoole se Prithvi ka ghoornan aur din-raat ka chakra samjhenge, taaron ko Dhruv taare ke chaaron or ghoomte dekhenge, Prithvi ki parikrama se badalta raat ka aasmaan aur mausam samjhenge, aur jaanenge Chaand aur Prithvi ki chhaaya se soorya aur chandra grahan kaise hote.
Is chapter mein tum
- Prithvi ke ghoornan se din-raat samjhaana
- Sooraj aur taare chalte kyun dikhte, samjhaana
- parikrama, badalta raat ka aasmaan aur mausam samjhaana
- soorya aur chandra grahan aur surakshit dekhna batana
Topics
- Prithvi ka Ghoornan NCERT 12.1
Prithvi apni dhuri par lagbhag 24 ghante mein Pashchim se Poorab ghoomti, din-raat hote.
- Parikrama aur Mausam NCERT 12.2
Prithvi lagbhag 365¼ din mein Sooraj ki parikrama karti; raat ka aasmaan saal bhar badalta.
- Grahan NCERT 12.3
Soorya grahan: Sooraj aur Prithvi ke beech Chaand; Sooraj ko kabhi seedhe mat dekho.
Key words
- Rotation
- Prithvi ka apni dhuri par ghoomna (lagbhag 24 h)
- Revolution
- Prithvi ka Sooraj ka chakkar (lagbhag 365¼ din)
- Axis
- dhruvon se guzarti kaalpanik rekha jis par Prithvi ghoomti
- Orbit
- ek pind ka doosre ke chaaron or raasta
- Solstice
- sabse lambe ya chhote din ka din
- Solar eclipse
- Chaand Prithvi ke hisse se Sooraj chhupaata
- Lunar eclipse
- Prithvi ki chhaaya Chaand par
Summary
- Prithvi Pashchim se Poorab ghoomti, din-raat aur Sooraj-taaron ki aabhaasi gati.
- Lagbhag 365¼ din mein Sooraj ki parikrama; raat ka aasmaan saal bhar badalta.
- Dhuri ka jhukaav mausam laata, dono golaardh mein ulte.
- Soorya grahan: beech mein Chaand; chandra grahan: beech mein Prithvi. Sooraj ko kabhi seedhe mat dekho.