CROSSWORD KEY TERMS LIST 06

4. Cracks in the Earth's surface where tectonic plates meet.
7. The process of arable land being turned into desert.
8. Fertile area in the desert that has water.
9. Dry riverbed in the desert that only holds water during the rainy season.
12. Where people live.
15. Forces that cause change outside the Earths such as erosion or weathering.
16. A bend in the Earth's crust.
17. History from the fall of the Roman Empire to the Discovery of America.
20. History from the Discovery of America to the Present.
24. man made water way connecting two bodies of water.
25. Sudden violent movement of tectonic plates along faults.

1. The amount of people per square mile.
2. The breaking up of rocks by physical and chemical means.
3. Mountain made of magma.
5. The moving of tectonic plates away from each other.
6. History from the beginning of written history to the fall of the Roman Empire.
10. The wearing away of soil by water, ice, and wind.
11. Area of seismic and volcanic activity that borders the Pacific Ocean.
13. Molten rock above the Earth.
14. Forces thatcause change inside the Earth such as Earthquakes or Volcano.
18. The number of deaths per thousand people.
19. The number of births per thousand people.
21. Systematic exploitation of involuntary labor, or the ownership of peopl.
22. History from the beginning of time until written History.
23. Molten rock below the Earth's surface.