Fossil Fuel Crossword Puzzle

QUESTIONS LIST:

• fossil : formed from the remains of plants and animals from millions of years ago
• coal : dark/black sedimentary rock that is combustible
• plants : coal is formed from this organic matter.
• anthracite : highest rank and has the highest concentration of coal
• lignite : lowest rank and lowest carbon concentration coal.
• petroleum : referred to as crude oil/oil and converted to petrol / diesel
• russia : philippines imports crude oil and petroleum from this country.
• natural gas : primarily composed of methane and used for cooking, heating, and generating electricity
• transportation : petroleum is mainly as _ fuel.
• electricity : coal is primarily used to produce _ .
• methane : natural gas is primarily composed of _ .
• carboniferous : fossil fuel formed millions of years ago, primarily during the _ period
• temperature : natural gas forms at higher _ than oil.