FOSSIL FUELS

How is natural gas different from coal?

• Natural gas is a renewable resource; coal is a fossil fuel

• Natural gas is a form of petroleum; coal is extracted from coal deposits

• Coal is a form of petroleum; natural gas is emitted by volcanoes

• Coal is a fossil fuel; natural gas is a renewable resource

Why are the remains of ancient organisms buried so deeply within the earth? Choose the best answer.

• They were swallowed up by major earthquakes

• Most ancient organisms lived underground

• They were buried by the meteor strike that killed the dinosaurs

• They were buried by natural processes

What force is important in the creation of both coal and petroleum?

• Putrefaction

• Petrification

• Pressure

• Oxidation

How long does it take decaying organisms to transform into fossil fuels?

• Decades

• Millions of years

• Thousands of years

• Hundreds of years

How are fossil fuels taken from the earth?

• Skimmed off the surface of the ocean

• Through underground combustion

• Through deep wells and mines

• Brought to the surface using water

Which of the following is most likely to use coal as fuel?

• Car

• Car

• Airplane

• Factory

Which of these is an advantage of fossil fuels?

• They do not require much processing

• You can extract them without complicated machinery

• Burning them does not have any negative side effects

• There is an unlimited supply of them

Why is burning fossil fuels bad for the environment?

• It destroys the ozone layer

• It adds harmful mercury to waterways

• The clouds it creates bring excess rain and flooding

• The gases emitted lead to global climate change

The gases produced by burning fossil fuels usually contain which element?

• Carbon

• Oxygen

• Hydrogen

• Nitrogen

How much of the world's energy comes from renewable resources?

• Less than half

• More than half

• All

• None