11-1 Water Resources Page 269

A. The Water Cycle 1. Water is a renewable resource. Why?

A. The Water Cycle 2. Water is circulated through the water cycle.

A. The Water Cycle

B. Global Water Distribution 1. If the earth is 71% water, why is it a limited resource?

B. Global Water Distribution 2. Statistics – 97% is salt water in oceans – 3% is fresh water (mostly frozen in glaciers/ice caps)

Why is it bad to drink salt water?

C. Surface Water 1. is fresh water on earths land surface.

C. Surface Water 2. As water collects they form streams, which then connect to form rivers as river systems.

C. Surface Water 3. An area of land that is drained by a river is called a watershed.

D. Groundwater 1. is water found below the earths surface in the spaces in sediment and rock formations.

D. Groundwater 2. Aquifers are underground formations that contain groundwater.

D. Groundwater 3. Some rocks allow for groundwater to pass through dues to porosity (pores) or permeability (allow some materials through).