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Book 30
Lesson 2
Across
1. a government department or part of a government department
4. the part of something that remains after the rest has gone or ended; a substance that remains after a chemical process
7. the part of a machine or piece of equipment that opens and closes in order to control the flow of air or liquid
8. to make less or cause to appear less
11. to make someone suffer because they have done something against the law or against the rules
12. to flow into or out of something through small holes, usually when this should not happen
14. a machine that compresses air or gas
16. the part of a machine or engine where air or fuel is taken in
17. to break something into very small pieces, or to be broken into very small pieces
19. a narrow part at the end of a tube through which a liquid flows
20. to force a liquid out of a container through a small hole into the air
21. a piece of equipment that turns to make something move or start
22. a layer of a substance that gradually forms on or inside something
Down
2. a piece of old cloth used for cleaning or wiping something
3. a substance that is added in small amounts to something, especially food, in order to make it last longer, look more attractive, or improve it in some way
4. to move forward and backward alternately
5. happening or done at the same time
6. below the surface of the ground
9. a deep hole that is dug in the ground to provide a supply of water, oil or gas
10. a pipe or tube in a building that carries something such as air or protects wires
13. to pay someone money because they have suffered an injury or loss
15. completely; thoroughly and in detail
18. to put something in the opposite position to the one it was in before, especially by turning it upside down