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Book 28
Lesson 4
Across
1. to end or stop
6. the screen of a radar set; range or extent
8. a small flashing light on a computer screen or similar piece of equipment
9. very small
12. no longer used because of being replaced by something newer and more effective
14. to produce energy in the form of electromagnetic waves such as heat, light, or radio waves
16. a pattern of straight lines that form squares on a map
22. a piece of electronic equipment that makes sounds louder, used for example with electric guitars or in stereo systems
23. to completely surround someone or something
26. a series of events that happen again and again in the same order or at the same times
27. thick wire covered with plastic that is used for carrying electricity or electronic signals
28. to bend or turn aside
Down
2. someone with technical training whose job involves using special equipment or machines
3. to throw or drop things so that they spread over an area
4. something that can change and affect the result of a situation
5. a photograph, painting, or other work of art that represents a person or thing
7. to mark on a map the way that a ship or plane travels
8. an exact position, usually measured from north
10. the line in the distance where the sky seems to meet the earth
11. neither very great nor very small in amount, size, strength, or degree
13. the rate at which a sound wave, light wave, or radio wave vibrates
15. to make a machine or piece of equipment start working
17. to surround someone or something; to send something such as a document with a letter
18. difficult to see clearly, or causing difficulty in seeing something clearly
19. a bright light or fire that shines in the dark and is used as a signal to warn people against danger or to show them the way somewhere
20. to change the way that something looks, sounds, or behaves so that it becomes strange or difficult to recognize
21. to concentrate on something and pay particular attention to it; to turn a part on a camera, telescope, microscope etc until you can see something clearly
24. a noise that is repeated because the sound hits a surface and returns
25. the steep side of an area of high land