11. INTRO

Try these first

1. 1.

   What is the main purpose of a sand filter?

   Hint

   Think about what filters do.

2. 2.

   Name one material used in sand filters.

   Hint

   The first layer is made of sand.

3. 3.

   What is the primary function of a sand filter?

   • A) Store rainwater
   • B) Purify rainwater
   • C) Collect leaves

   Hint

   Consider what you learned about the function of filters.

4. 4.

   True or False: Sand filters can only be used in urban areas.

   • True
   • False

   Hint

   Think about the flexibility of sand filter applications.

5. 5.

   Design a sand filter for a community of 50 households, considering the volume of rainwater collected in a month. Include specifics about materials and structure.

   Hint

   Consider how much rainwater the community collects and scale the materials accordingly.

6. 6.

   Evaluate the effectiveness of sand filters compared to chemical purification methods in terms of sustainability and environmental impact.

   Hint

   Think about how chemicals can affect local ecosystems versus natural filtration.