Water Filter

Water Filter

1. Gather materials

   • Marbles
     • Fabric Screen
       • Aquarium Rocks
         • Sponge
           • Sand
             • Fabric Screen
               • Will prevent the sand particles from escaping into the water
             • Will filter the tiniest particles
           • Will act as a clarifying agent
         • Will filter the water for smaller particles
       • Will prevent the big waste particles from mixing with the rest of the filtration materials
     • Will filter out large particles

2. The only source of water is contaminated so we need to build a water filter

   • Make sure that materials are easily accesible
     • Gather materials
       • Build filter
         • Test filter
           • Succeeded in choosing easily accesible materials, but the filtered water wasn't clean
             • The water wasn't clear, colourless, or ordourless
               • Add cotton balls and take out the marbles next time
                 • The cotton balls will soak up dyes in the water and the marbles weren't necessary
     • Try to choose materials that last a long time