Oil Shale Quiz

Oil Shale is a fine-grained, dark brown or black rock from which ..?.. can be extracted.

The oil content in shale is ...?

The source of oil is a substance called?

When crushed and ..?.. most oil shales yield only about 5-10 gallons per ton of rock.



Please make sure before you check answers, that spaces haven't been left before or after the words or it will mark them wrong.


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