PDF chapter test TRY NOW
Origin of continents
- Pangea: The Super Continent.
- The Sea surrounding Panagea is Panthalassa.
- These landmasses moved away from each other 200 million years ago to gain the present position as continents and oceans.
- The Earth is covered by 71 percent water, and the rest 29 per cent is covered by land.
- The surface of the Earth is not even.
Land classification during the Sangam period
S.No. | Landscape | Attribute |
| 1 | Kurinji | Moutain and its associated land forms |
| 2 | Mullai | Forest and its related land forms |
| 3 | Marutham | Agricultural and its adjoining areas |
| 4 | Neithal | Sea and its surroundings |
| 5 | Palai | Desert region |
Register for free to see more content