Social Science · Class 6
Geography: Earth
Learn Geography: Earth with notes, examples, and practice questions.
4 sections15–25 min read6 MCQs · 2 examples
Chapter Overview
Earth is a unique planet with landforms, hydrosphere, atmosphere, and life. NCERT Class 6 geography introduces motions of Earth, maps, and major domains of the Earth.
Motions of Earth
- Rotation: west to east, 24 hours — day and night
- Revolution: 365¼ days around Sun — seasons
- Tilt of axis (23.5°) causes season variation
Major Domains
- Lithosphere: solid crust and upper mantle
- Hydrosphere: oceans (97% water), rivers, ice
- Atmosphere: layers — troposphere weather
- Biosphere: zone where life exists
Landforms
- Mountains, plateaus, plains formed by internal and external forces
- Erosion by rivers, wind, glaciers
- Earthquakes and volcanoes at plate boundaries
Solved Examples
Step-by-step solutions — read each step before checking the final answer.
Seasons
Why does India have summer and winter?
- 1Earth's axis tilted 23.5°
- 2Revolution changes tilt direction toward Sun
- 3More direct rays in summer
Answer
Tilt plus revolution around Sun
Domains
Which domain contains all life?
- 1Biosphere overlaps land, water, air
- 2Plants and animals need all three
Answer
Biosphere
Key Points to Remember
- ✓ Earth is third planet from Sun
- ✓ 71% surface covered by water
- ✓ Rotation causes day-night
- ✓ Maps represent Earth's surface
Exam Tips
- • Draw diagram of Earth's rotation
- • Name four layers of atmosphere briefly
- • Difference mountain and plateau
Practice MCQs — Geography: Earth
Test your understanding with topic-wise multiple choice questions. Explanations appear after each answer.
Question 1 of 6Score: 0/0
Day and night due to: