Name where the rocks have been lightly metamorphosed. On that route "shale" has been converted into "slate." It can be difficult to pick up a rock and apply the proper You will have a difficult time deciding where Imagineĭriving your car eastwards in Pennsylvania through areas of increasing metamorphism, starting where the rock isĭefinitely "shale" and stopping to examine rock at each outcrop. Every Friday I’ll be testing your knowledge with 12 challenging questions on the week’s news events, big and small, including happenings in science, sports, politics, and culture both high and low. I’m your host, 74-time Jeopardy winner Ken Jennings. This confusion of terms partially arises from the fact that shale is progressively converted into slate. Welcome back to Slate’s weekly news quiz. Said Democrats should abolish the Senate filibuster to lift the debt ceiling on their own. To use the word "slate" when talking about "shale." However, in the past the word slate was often used freely in reference for shale. Filibustered a Democratic bill to lift the debt limit. Photos by Thinkstock, Uber and Nicholas Kamm/AFP/Getty Images. The word "slate" has not been used consistently over time and in some industries. ![]() Image copyright iStockphoto / Bruce Lonngren. These slates were widely used until the late 1800s, when wood-case pencils were easily produced and the price of paper became affordable. Students wrote on the slate with a "pencil" made from slate, soapstone, or clay. School slate: School slate used for writing practice and arithmetic.
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