Dynamic Earth

6. Some water within the plants evaporates into the atmosphere.
7. Another name for the water cycle.
9. A network of streams that drains an area of land.
12. Precipitation that is intercepted by plants and never reaches the ground.
14. Systems energy enters and leaves the system but matter does not.
17. Solid states to gas.
18. Rain, snow melt, or other water that flows surface streams, rivers, or canals.
21. A measure of the amount of dissolved salts in a given amount of liquid.

1. Most salt in the ocean.
2. Layer where temperature falls rapidly.
3. Systems that can exchange both matter and energy with its surroundings.
4. Unsaturated zone of soil between the ground surface and water table.
5. The percentage of pore space in a material.
8. Water on the surface enters the ground.
10. Level below which the ground is completely saturated with water.
11. Holes dug or drilled deep into the ground to reach a reservoir of groundwater.
13. From a gaseous state to a liquid.
15. From a liquid state to a gas.
16. The ability of a material to let water pass through it.
19. The deflection of circulating air.
20. Allows a planet to maintain an atmosphere and to cycle materials.