Topic 1 - Introduction

Question 1

Hydrologic Cycle

Answer 1

Evaporation + Transpiration —> Condensation + Precipitation —> surface runoff + infiltration —> stream flow + groundwater flow

Question 2

What is the hydrologic cycle’s main driving factor? Name 2 others.

Answer 2

Main: Solar energy

-also by wind and atmosphere circulation

Question 3

Unique properties of water essential for life to exist (5)

Answer 3

1) 3 phases
2) high heat capacity
3) Water expands when it freezes
4) Capillary Suction
5) Effective solvent

Question 4

Hydrologic Budget:

P-O-F-E-T = deltaS
R=P-Ia-F-E-T

Name the variables. Units?

Answer 4

P = precipitation
O = runoff
F = infiltration
E = evaporation
T = transpiration
R = rainfall excess
Ia = depression storage
deltaS = change in water storage

Units in inches.