Geomorphology and the Earth
The Earth: origin, rotation and revolution
Practise 5 PYQsConcepts to cover
- Origin of the Earth: Big Bang, nebular hypothesis and planetesimals
- Evolution of the atmosphere and oceans by degassing
- Rotation and revolution: day and night, the year, aphelion and perihelion
- Axial tilt of 23.5 degrees, solstices, equinoxes and the seasons
- Variation of day length with latitude and season; midnight sun at the polar circles
- Finding direction from the Pole Star and the Sun
- Geological time scale: eons, eras and periods
Where to study
Fundamentals of Physical Geography, Class XI, chapter 2: The Origin and Evolution of the Earth (Reprint 2026-27)
- ch. 2, The Origin and Evolution of the Earth, p. 1-6 (book pages 12-17)
- ch. 2, Origin of the Earth, p. 2 (book page 13)
- ch. 2, Origin of the Universe, p. 2-3 (book pages 13-14)
- ch. 2, degassing, p. 4-5 (book pages 15-16)
- ch. 2, 4,600 million years, p. 4-5 (book pages 15-16)
Exploring Society: India and Beyond, Class VI, chapter 1: Locating Places on the Earth (2024)
- ch. 1, Locating Places on the Earth, p. 1-26 (book pages 1-26)
- ch. 1, cardinal directions, p. 10 (book page 10)
Certificate Physical and Human Geography · Goh Cheng Leong
- ch. 1, The Earth and the Universe
Fundamentals of Physical Geography, Class XI, chapter 8: Solar Radiation, Heat Balance and Temperature (Reprint 2026-27)
- ch. 8, aphelion, p. 1 (book page 67)
- ch. 8, angle of 66, p. 1 (book page 67)
- ch. 8, the length of the day, p. 1-2 (book pages 67-68)