4.1.1. Surface Cover Methods

Try these first

1. 1.

   What is a monomolecular film?

   Hint

   Think about what it covers.

2. 2.

   Why are floating covers beneficial?

   Hint

   Consider what they float on.

3. 3.

   What is the main purpose of using monomolecular films?

   • To enhance evaporation
   • To reduce evaporation
   • To collect rainwater

   Hint

   Think about their physical barrier function.

4. 4.

   True or False: Floating covers can help keep debris out of water reservoirs.

   • True
   • False

   Hint

   Think about layers protecting surfaces.

5. 5.

   Calculate the potential water savings if a reservoir with a surface area of 1000 m² employs both a monomolecular film and floating covers to reduce evaporation by 30%. What is the savings in cubic meters if the annual evaporation rate is 1500 mm?

   Hint

   Use surface area and evaporation rate to find total loss before applying the reduction.

6. 6.

   Propose a city planning initiative using wind breaks for a community near a large lake. What factors should be considered, and how would you measure effectiveness?

   Hint

   Think about how wind moves and how trees could block it.