fossil fuels
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FOSSIL FUELS. What are fossil fuels?. Fossil fuels (coal, oil and natural gas)are forms of stored energy that are formed when plant and animal remains are trapped in the earth’s crust for millions of years and heat and pressure act on them. Natural Gas. Coal. Oil. - PowerPoint PPT PresentationTRANSCRIPT
FOSSIL FUELS
What are fossil fuels?
• Fossil fuels (coal, oil and natural gas)are forms of stored energy that are formed when plant and animal remains are trapped in the earth’s crust for millions of years and heat and pressure act on them
Natural Gas
Oil
Coal
Why are fossil fuels important• Fossil fuels are used to produce heat and
also power machines in factories.
• Fossil fuels power machines called turbines that help produce electricity
• Fossil fuels are refined to make gasoline used by cars
Turbines Gasoline
Evaluating Energy Resources• The types we use determine our quality of
life and the amount of harmful environmental effects
• Questions to ask ourselves:– How much of the energy source will be
available in the future?– What is this source’s net energy yield?– How much will it cost to develop, phase in, and
use this resource?– How much will extracting, transporting, and
using the energy resource affect the environment?
– What will using this energy source do to help sustain Earth?
Net EnergyThe total useful energy available from the resource over its lifetime
minusThe amount of energy used, lost, and wasted in finding, processing, concentrating, and transporting it to uses
Fossil FuelsCOAL
Fossil FuelsOIL
Fossil FuelsNATURAL GAS
Natural gas is commonly used as a source of heat for cooking
Poster & Gallery Walk • On your poster you must include the
following:– Title – Picture– What is this fossil fuel and how is it formed? – Where is this fossil fuel found and how do
we find it? – How do we use this fossil fuel and what is
the net energy yield?– What are the benefits (pros) of this fossil
fuel?– What are the cons for this fossil fuel?
• Information needs to be easy for others to find.
When fossil fuels are burned in excess, they can cause air pollution
Fossil fuels: Reduce, Reuse & Recycle• Fossil fuels are non-renewable resources
and therefore they have to be used wisely
• Excess burning of fossil fuels releases a lot of carbon dioxide gas into the atmosphere
• Excess carbon dioxide destroys the earth’s ozone layer which protect us from skin cancer
Fossil fuels are unevenly distributedWhat % of the world’s oil does Iraq have?
What % of the world’s natural gas does the U.S. have?
Why do you think some countries have more fossil fuels than others?
3.0%9.6%
Usage of fossil fuelsGlobal consumption of fossil fuels is at its highest level ever.
How much does the average American use compared to the average Indian?The average American uses 100 times more energy than the average Indian.
When in your day do you use fossil fuels?