Question

Give a brief explanation about the origin of the earth

Answer 1

1. 3rd planet on the solar system
2. formed about 4600 million years ago
3. a hot mass of gas was thrown off the sun
4. these gases cool to form liquid
5. Heavier material collected at the centre to form the core
6. Less heavier formed mantle and crust
7. As cooling continued the outer part of the earth hardened faster to form crust.