Process

Question 1

Evaporation Preconditions:

Answer 1

1. Water
2. Saturation deficit
   [graph page 5]
3. Tension gradient atmosphere → vegetation → soil
    Rising of water from soil into the plant roots through the leaves into the atmosphere follows tension gradient
    Movement is from lower tension to higher tension (or from higher potential to lower potential)
4. Energy
   [figure page 7]

Question 2

Factors affecting evaporation:

Answer 2

 Temperature, radiation, wind, humidity → meteorology

 Soil moisture, soil type → water, soils

 Plants (type, age, season, roots) → vegetation

 Nutrients, light, O2, CO2 → nutrient cycles