Exercise 8. Do the following crossword. Revise your vocabulary of previous units

1						2													3
																	4
			5												6
	7											8
	9										10			11
										12
			13
				14										15
								16

Across:

1. An event, action or thing that is a sign that something exists or is happening.

5. An act of increasing or making something increase in size.

6. A hard, usually transparent, substance used, for example, for making windows and bottles.

9. The length of time that somebody lives or that something lasts.

10. An electrical device or piece of equipment that makes sounds or radio signals louder.

13. The area around a particular place.

14. The particular way in which something is done or a particular design of something, especially clothes.

15. F variety of things of a particular type or the limits between which something varies.

16. Very important or serious, especially because there may be important results.

Down:

2. The quality or state of being steady and not changing or being disturbed in any way.

3. Microwave amplification by stimulated emission of radiation.

4. A hole or empty space inside something solid.

7. Something that seems to exist but in fact does not.

8. The production or sending out of light, heat, gas, etc.

11. A device that makes a very strong line of controlled light.

12. An organized set of ideas or theories or a particular way of doing something.

14. International system of units.