Quiz Time
1. Answer the questions.
a. Why are coal and petroleum called fossil fuels?
b. What is the destructive distillation of coal?
c. What products are obtained when petroleum is refined?
d. What is PNG? What is it used for?
e. How do fossil fuels contribute to global warming?
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- Over millions of years, heat and pressure from Earth's crust decomposed these organisms into one of the three main kinds of fuel: oil (also called petroleum), natural gas, or coal. These fuels are called fossil fuels, since they are formed from the remains of dead animals and plants.
- Destructive distillation of coal produces many by-products. In the process, heated coal turns into coke, ammonia dissolves in water to form ammonia liquor and coal gas and coal tar are also produced. ... Coal breaks down to produce coke, coal tar, ammonia and coal gas.
- An oil refinery or petroleum refinery is an industrial process plant where crude oil is transformed and refined into useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils.
- A portable network graphic, or PNG, is an image file type used to offer a clear background or a partially transparent image, and is therefore used primarily for web design.
Fossil fuels produce large quantities of carbon dioxide when burned. Carbon emissions trap heat in the atmosphere and lead to climate change. In the United States, the burning of fossil fuels, particularly for the power and transportation sectors, accounts for about three-quarters of our carbon emissions.
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