Aquifers

2. This is a place in a desert where the Earth's surface dips below the water table.
5. An aquifer can be thought of as one of these.
8. The world's biggest water engineering project has been built in this country.
10. the crater of an extinct volcano
12. Wind _______ uncovers fossils in the desert sedimentary rock.
13. One of the Libyan coastal cities to which water is pumped.
14. Some water in aquifers has been there for _________ of years.
17. the artificial watering of crops
20. this is water that is crammed into the tiny gaps between rock, soil and sediments.
21. these are what paid for the Great Man Made River.
23. below the water _____ the ground is completely saturated with water.
25. The area above the water table is called the ___________ zone.
26. This happens to surface water that does not sink into the ground or flow away.

1. the world's largest hot desert
3. another word for underground
4. Lakes, ponds, streams and oceans are _______ water.
6. The name of the sandstone aquifer under the Sahara Desert
7. a large machine used for digging.
9. This is where groundwater flows out of the earth to form stream.
11. American farms use about 53 _______ gallons of groundwater per day.
15. This helps to keep the air warm after sunset.
16. These people built cities on the Libyan coast in ancient times.
18. a man-made watercourse
19. Different kinds of these are added to the desert sand before crops can be grown under irrigation.
22. another name for the High Plains Aquifer in the United States of America
24. a large body of underground water