Fossil Fuels Flashcards

1
Q

What are fossil fuels?

A

They are non renewable resources made from the remains of plants and animals who died millions of years ago.

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2
Q

What is the order of the
grade of coal (From worst quality to best quality?

A

Lignite, Subbituminous, Bituminous, and then Anthracite.

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2
Q

Why are fossil fuels considered non-renewable?

A

Because they cannot be replenished within the human lifespan. Even if they are abundant and cheap, they are still a limited resource.

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2
Q

What are the three types of fossil fuels?

A

Coal, oil, and natural gases

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3
Q

What is coal?

A

It is a solid fossil fuel that comes from the remains of dead trees and plants.

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4
Q

What is oil?

A

Liquid fossil fuel made from organic material (mostly algae). Found at the bottom of seas and lakes.

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5
Q

What is the first step to fossil fuels being formed?

A

Plants and animals from millions of years ago die and are buried/fall into swamps and seas.

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5
Q

What is natural gas?

A

It is a gaseous fossil fuel made mostly from methane. It can be found where oil is found.

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6
Q

What is the second step to fossil fuels being formed?

A

The buried plant and animals remains are covered by mud sediments.

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7
Q

What is the third step to fossil fuels being formed?

A

These mud sediments are turned to rock as temperature and pressure increase over a long period of time.

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8
Q

What is the fourth step to fossil fuels being formed?

A

This mud creates a low oxygen environment, allowing the organic materials to change chemically

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8
Q

What is the fifth step to fossil fuels being formed?

A

The fossil fuels are made and companies dig it up using drills.

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