Coal and Petroleum Class 8 Notes

Coal and Petroleum Class 8 Notes – Chapter 5

Around 300 million years ago, the dense forest in wetland areas was buried under the soil due to flooding. They were compressed, as more and more soil deposited over them. Under high pressure and temperature, the dead plants were converted to coal.

The other exhaustible natural resource petroleum was formed from the organisms living under the sea. As the organisms living under the sea died and settled at the bottom of the sea, they were covered with layers of clay and sand. These dead organisms with layers of sand and clay transformed into petroleum and natural gas under high pressure and temperature. Please refer Coal and Petroleum Class 8 Notes for more revision notes.