Chapter 3

Coal and Petroleum

Study fossil fuels, their uses, and the need for conservation.

Overview

Coal and petroleum are fossil fuels formed from dead organisms over millions of years under heat and pressure.

Important Terms

Refining

The process of separating the useful fractions of petroleum.

CNG

Compressed natural gas, a cleaner fuel used in vehicles.

Quick Revision

Conservation Rules

Use public transport when possible.
Switch off engines during long stops.
Repair fuel leaks quickly.