Fossil fuels are found in almost every product we use daily.One major use of these products is as fuel, gasoline for cars, jet fuel, heating oil and natural gas used to generate electricity.The energy produced by burning fuel has many applications, such as powering vehicles, ships, and airplanes as well as providing electricity for homes and buildings. Some common types of fuels are petro fuel, gas oil, diesel fuel, fuel oils, aviation fuel, jet fuel, and marine fuels.Fossil fuel is a general term for buried combustible geologic deposits of organic materials, formed from decayed plants and animals that have been converted to crude oil, coal, natural gas, or heavy oils by exposure to heat and pressure in the earth's crust over hundreds of millions of years.