1. Ch. 10 Water

2. 1. 3% of Earth’s water is fresh water. 2
1. 3% of Earth’s water is fresh water. 2. Tributaries are small rivers that feed into main rivers. 3. Groundwater fills spaces in underground soil.

3. 4. Layers of rock underground that hold water are aquifers. 5
4. Layers of rock underground that hold water are aquifers. 5. A river and its tributaries make up a river system. 6.Groundwater can be found by drilling into an aquifer.

4. 7. A lake that stores water for human use is a reservoir. 8
7. A lake that stores water for human use is a reservoir. 8. Water that falls to earth (rain, sleet, snow, hail) is precipitation. 9. Densest ocean water is in the deep zone.

5. 10. The surface zone temperature is most affected by weather.
11. Large streams of moving water that flow through the ocean are currents.
12. Organisms that form the base of ocean food chains are plankton.

6. 13. A wall built on the beach to prevent erosion is a groin. 14
13. A wall built on the beach to prevent erosion is a groin. 14. Water that flows back to the ocean through a narrow opening is a rip current. 15. Benthos live on the ocean floor.

7. 16. Flat region on the ocean floor covered with mud is an abyssal plain. 17. The neritic zone extend from the low-tide line to the continental shelf.

8. 18. Lowest point of a wave is the trough.
19. Tsunamis are destructive because of their wave height.
20. The sinking of Dense, cold water with high salinity causes deep currents near the poles.

9. 21. Pressure causes groundwater to rise in an artesian well. 22
21. Pressure causes groundwater to rise in an artesian well. 22. Waves close to the shore increase in height but decrease in wavelength. 23. Temperature decreases as you descend through water.

10. 24. Sodium chloride is the most abundant sale in sea water. 25
24. Sodium chloride is the most abundant sale in sea water. 25. A trench is a deep canyon on the ocean floor.