Fossil Fuels

Fossil Fuels

Middle School

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Learning Objectives

• Define fossil fuels and why they are called non-renewable resources.

• Identify the three main types of fossil fuels: coal, oil, and natural gas.

• Describe the formation, uses, and extraction methods for each type of fossil fuel.

• Compare the pros, cons, and environmental impacts of using fossil fuels.

Key Vocabulary

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Fossil Fuels

Fossil fuels are energy sources from ancient decomposed organisms, containing both carbon and hydrogen.

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Coal

Coal is a combustible, fossilized carbon from decayed ancient plants that is mined for fuel.

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Petroleum

Petroleum, or crude oil, is a liquid fossil fuel made mostly of hydrogen and carbon.

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Natural Gas

Natural gas is a flammable, colorless, and odorless fossil fuel composed mostly of methane gas.

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Fracking

Fracking is a process that uses high-pressure water to split underground rocks to extract natural gas.

What Are Fossil Fuels?

• Fossil fuels are made from ancient dead plants and animals.

• They are non-renewable and will run out one day.

• The main types are coal, oil, and natural gas.

Multiple Choice

According to the text, which of the following is a key characteristic of fossil fuels?

• They are a renewable resource that replenishes quickly.

• They are considered non-renewable and take millions of years to form.

• They cause no harm to the environment when used.

• They are primarily made of water and are found on the surface.

All About Coal

• Coal is a fossil fuel formed from decayed swamp plants.

• It is mined from underground layers.

• Burning coal releases pollutants that can harm people and the environment.

Multiple Choice

How is coal formed?

• From decayed swamp plants buried and compressed over time

• From the remains of ancient animals buried under sediment

• From layers of sand and clay hardened over millions of years

• From liquid petroleum that solidifies under high pressure

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What Is Oil (Petroleum)?

• Petroleum is a liquid fossil fuel extracted by drilling into rock.

• Products like gasoline, plastics, and medicines are made from petroleum.

• It produces a lot of energy and is easy to transport.

• Burning oil pollutes the air, and spills can harm a lot of wildlife.

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Multiple Choice

What is a primary advantage of oil as an energy source?

• It is a clean-burning fuel with no harmful emissions.

• It helps in the development of renewable resources.

• A small amount produces a lot of energy, and it is easy to transport.

• Oil spills have minimal impact on the environment.

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Natural Gas

• Natural gas is a fossil fuel, mostly methane, trapped deep underground.

• ​It is extracted by a process called fracking, using high-pressure water.

• It burns cleaner than coal or oil and is cheaper and abundant.

• However, switching from oil to natural gas may require costly infrastructure, such as pipelines, storage facilities, and modified engines.

• Fracking can pollute water, and gas leaks can cause dangerous explosions.

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Multiple Choice

What is a significant environmental risk associated with the extraction of natural gas?

• The fuel is extremely safe with no chance of explosions.

• The process of fracking can contaminate sources of drinking water.

• It produces a thick, black liquid that is hard to clean.

• It is the most expensive fossil fuel to produce and distribute.

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Common Misconceptions About Fossil Fuels

Misconception	Correction
Fossil fuels are a recent discovery.	They have formed from ancient remains over millions of years.
Natural gas is a perfectly "clean" energy source.	Burning it still releases greenhouse gases and has environmental risks.
We are running out of all fossil fuels tomorrow.	Supplies are limited, but we are not running out immediately.
Fossil fuels are only used for heat and electricity.	They are also used to make plastics, medicines, and fertilizers.

Multiple Choice

Why is natural gas often considered a better option among fossil fuels, despite its own environmental risks?

• Because its extraction process has no environmental impact.

• Because it burns cleaner and causes less overall environmental damage than coal and oil.

• Because it is not a finite resource and can be replenished quickly.

• Because it is the most abundant and cheapest of all energy sources.

Multiple Choice

Based on how they are formed, what is the reason fossil fuels are classified as a 'non-renewable' resource?

• Because they are made from materials that are no longer available on Earth.

• Because they can be recycled and used again.

• Because they take millions of years to form and cannot be replaced in a human lifetime.

• Because they are only found in one specific location on Earth.

Multiple Choice

A company wants to build a new power plant using coal. Based on the text, what environmental and health consequences must be considered?

• The contamination of groundwater and the hindrance of renewable resource development.

• The risk of oil spills and the high cost of transportation.

• The release of greenhouse gases, acid rain, and the health impacts on miners.

• The danger of gas leaks and potential for mini-earthquakes.

Multiple Choice

If a community wants to reduce its dependence on oil for energy and transportation, what is a likely challenge it would face if it switched to natural gas?

• Increased air pollution and the by-products from burning the fuel.

• The difficulty of transporting the fuel to power vehicles.

• The need for an expensive infrastructure for production and distribution.

• A significant increase in fuel costs compared to oil and coal.

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Summary

• Fossil fuels like coal, oil, and natural gas are non-renewable energy sources.

• Coal is a solid fuel used for electricity, and oil is refined into gasoline.

• Natural gas is the cleanest-burning fossil fuel, but its extraction carries risks.

• Using fossil fuels contributes to air pollution, acid rain, and climate change.

Poll

On a scale of 1-4, how confident are you about the concepts covered in today's review?

• 1

• 2

• 3

• 4