EASY | A LITTLE LESS EASY | ITS GETTING TOUGHER | KIND OF HARD | VERY HARD |
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What is Coal?
What is a carbon filled rock?
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What is the color of Peat?
What is the color brown?
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Which state has the largest coal reserves?
What state is Pennsylvania?
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How is coal mined?
What is strip mining, reclamation, or underground mining?
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What percentage of the total net electricity generated in America each day is represented by coal?
What is 56 % ?
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What are three of the four major types of coal?
What is Lignite, Bituminous and Anthracite?
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What are some used for coal?
What is electricity generation, home heating or steel production?
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What is underground mining?
What happens when coal is so deep under the surface that tunnels have to be dug to extract it?
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What is an economic disadvantage of using coal as an energy source?
What is an expensive resource?
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What two transportation methods move nearly 2/3 of all U.S. coal shipments?
What are railroads and barges (ships)?
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What is the hardest type of coal?
What is Anthracite?
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What percentage of carbon is found in coal?
What is 90% of Carbon?
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What is a miner's canary?
What is taking a bird into mines to detect for poisonous gasses?
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What is Peat?
What is the first stage of coal formation?
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What is the half life of coal?
What is 5730 years?
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Where is coal found?
Where is every continent including Antarctica?
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What gasses are released into the atmosphere by coal?
What are CO2 and sulfur particles?
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What is continuous mining?
What is using a huge machine to scrape coal from a seam?
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What climate conditions are needed for coal to form?
What happens when large amounts of plant matter fall into a wet, swampy environment?
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What is conventional mining?
What is using explosives to break up a coal seam?
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What is black lung?
What happens when miners breath in too much coal and dust?
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What are some environmental disadvantages of coal?
What is producing acid mine drainage, acid rain or climate change?
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Why is coal used to generate energy?
What is a reliable resource?
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Why did oil and natural gas gain popularity over coal after the 1930s?
What happens when coal becomes harder and harder to find?
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Which Northwestern state has the largest coal reserves?
Where is Montana?
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