22.1. Concept of Evapotranspiration

Try these first

1. 1.

   What does ET stand for?

   Hint

   Think about the combination of evaporation and a plant function.

2. 2.

   What is transpiration?

   Hint

   Consider how plants 'breathe out' water.

3. 3.

   What is a component of evapotranspiration?

   • Evaporation
   • Condensation
   • Precipitation

   Hint

   Think about how water changes form.

4. 4.

   Potential Evapotranspiration is defined as the amount of ET that would occur under what condition?

   • True
   • False

   Hint

   Remember what 'potential' implies.

5. 5.

   Given a region with high temperatures and low humidity, predict how these conditions would impact the PET compared to a cooler, more humid region.

   Hint

   Consider the relationship between temperature and water vapor in the air.

6. 6.

   If a farmer notices lower crop water requirements than predicted by PET, what could be potential reasons for this discrepancy?

   Hint

   Think about factors that can limit water loss in plants.