| 1. The end of a river where the water flows out is its | 11. The flow of water in a river is called current. |
| 2. Places where rivers run swiftly over and around rocks are called rapids. | 12. A shallow place where it is easy to cross a river on foot is a ford. |
| 3. A river that feeds water into another is a tributary. | 13. The path a river follows is its course. |
| 4. An area where all rain and snow flows into a common river or lake is a drainage basin. | 14. In order to move boats through a canal, we use locks. |
| 5. A place where it is easy to walk from one river to another is a portage. | 15. A place where water comes up from beneath the ground is a spring. |
| 6. An underground lake of water is an aquifer. | 16. To create a reservoir we use a dam. |
| 7. Water dropping suddenly over a cliff is a waterfall. | 17. A very small stream is a creek. |
| 8. A place where a river opens into the sea through many channels is a delta. | 18. The place where a river begins is its source. |
| 9. A large area of mushy ground partially under water is a swamp. | 19. The line between drainage basins is a divide. |
| 10. A man-made lake is a reservoir. | 20. Going up a river, a point where it divides is a fork. |
Word Bank
| tributary X (3) | creek X (17) | mouth X (1) | ford X (12) | dam X (16) |
| swamp X (9) | portage X (5) | rapids X (2) | divide X (19) | aquifer X (6) |
| waterfall X (7) | course X (13) | spring X (15) | current X (11) | drainage basin X (4) |
| locks X (14) | delta X (8) | reservoir X (10) | fork X (20) | source X (18) |
You have now completed this lesson set.
Copyright 2000 by Robert C. Law. Permission to copy granted provided this credit line is included:
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