Fill in the blanks with the words in the word bank on the right. Use each word only once.
1. Coal is called a
because it was made from plants millions to hundreds of millions of years ago.
2. Coal is
; you can not make more in a short time.
3. When coal is near the surface, the Earth is scraped off the coal in a
4. To reach coal buried far underground,
are dug. This is called
5. Making the mined land usable again is called
6. Coal is burned in a power plant to make
7. Most coal is moved by
the air when it is burned.
9. Power plants use
to clean the emissions from burning the coal.