 |
Java Games: Flashcards, matching, concentration, and word search. |
 |
|
Coal Unit Vocabulary
Our final chapter of study. How PA's five themes affect our lives daily.
|
| A | B |
|---|
Coal,  | Coal is a burnable carbonaceous rock that containA fossil fuel—a substance that contains the remains of plants and animals and that can be burned to release energy |
| Lignite | Also called brown coal, this type of coal is used mainly at electricity-generating plants. |
overburden,  | the material that is removed from the earth's surface to uncover the coal. includes layers of earth and rock. |
Peat,  | Peat is the first stage in the transformation of vegetation into coal. For hundreds of years, people have cut, dried, and burned it for heating and cooking. This compact, dark-brown material contains about one third less heating value than coal. |
slurry,  | coal that is ground to a powder and mixed with water. In this form, coal can be pumped through a pipeline |
Surface mining,  | used when coal is found close to the surface or on hillsides. It involves removing the topsoil and subsoil and setting them aside while the coal is removed. |
turbine,  | an engine that spins around, causing the heat energy of burning coal to become mechanical energy. |
underground mining,  | used to extract coal that is deep beneath the surface or in seams exposed on hillsides. It involves drilling two openings called shafts into the coal bed—one to transport miners and equipment and the other to bring coal to the surface. |
Anthracite,  | a type of coal that has the highest carbon content and the lowest moisture and ash c burns slowly and makes a good heating fuel for homes. |
Bituminous,  | the most plentiful coal type in the United States. |
Clean Air Act,  | a strict air pollution control law that was passed in 1970. |
Land reclamation,  | the process of protecting, restoring, and possibly even improving the land before, during, and after surface mining. |
longwall mining machine,  | a cutting machine that works along walls of coal up to 1,000 feet long to cut coal and drop it onto a conveyor belt. |
|
|
|
|
|
|
Green Seven Geography |
Manor Middle School |
| Lancaster, PA |
|
|
|
|
|
| |
