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Book 29
Lesson 4
Across
3. a group of things connected, such as roads, computers, persons, etc.
6. the most important or most basic part of something
7. to shut a door or a lid with great force so that it makes a loud noise
9. a station, as in bus, train, computer, etc.
10. the way in which something curves
11. a diagram (as a series of one or more points, lines, line segments, curves, or areas) that represents the variation of a variable in comparison with that of one or more other variables
15. to make (something secret or hidden) publicly or generally known
18. a long narrow piece of a material; a long narrow area of land or water
20. spinal column, spine
21. offering or providing help
22. very great or extreme
Down
1. affected by an illness
2. to produce liquid on your skin as a result of being hot, ill, or nervous
4. one of the two organs in your body that clean your blood and remove waste
5. to provide evidence that shows that something is true
6. the things that are written in a book, magazine, letter, document, etc.
7. the row of bones down or along the middle of a human’s or animal’s back
8. additional objects, equipment, decorations, etc. that make something more useful or attractive
12. to hit someone or something with your fist, usually as hard as you can; to press a button or switch; to make a hole in something with a tool or machine
13. an empty space (as on a paper)
14. the set of bones that supports a human or animal body
16. a set of papers, documents, or records that you keep because they contain information
17. a thin circular object
19. a structure that forms part of an object and gives it its strength and shape