9781422274552

F ossil fuels, nuclear energy, solar energy, wind, water, and biomass are the primary sources of energy. When energy from these sources is converted into a more usable form, they become secondary sources of energy. We depend heavily on fossil fuels for electricity. Electricity Generation

Thermal Power Stations In thermal power plants, electricity is gen- erated by burning coal. The burned coal heats up the water in the boiler and produc- es steam. The steam flows into a turbine, which spins the generator attached to it and generates electricity. However, the burning of coal emits large amounts of CO 2 into the atmosphere. These power plants are the major source of power in most countries of the world.

How electricity is generated

CLIMATE CHANGE: Problems and Progress

12