GGR100H1 Chapter 9: Chapter 9- textbook
Document Summary
The hydrologic cycle hydrologic cycle, which has operated from billions of years from lower atmosphere to several kilometers beneath earths surface. The cycle involves the circulation and transformation of water throughout earth"s atmosphere. 97% of earths water is in the ocean and here most evaporation and precipitation occur the other 14% is from the land including water moving from the soil into plant roots and passing through their leaves. Precipitation that reaches earth"s surface follows two pathways flows overland or soaks into soil. Along the way interception occurs when precipitation strikes vegetation or other ground cover. Intercepted water that drains across plant leaves and down teir stems to the ground is stem flow and can be an important moisture route to the ground. Precipitation that falls directly to the ground constitutes throughfall. Water soaks into the subsurface through infiltration or pentration of the soil surface.
