Water Filter Science

Aim: To make a filtration plant using household materials.

What is filtration?

Filtration is separating solids from liquids by adding a medium through which only the liquid can pass. 

Examples are:

1. tea bag
2.  coffee
3. kidney
4.  pool

Materials

1. bottle

2. rocks 

3. sand

4. filter paper

5. dirty water

Process - ( use verbs or doing words in each step )

Step 1

Cut the bottle in half

Step 2

Put the top half upside down inside of the bottle

STEP 3

Add one layer of filter paper, cup of pebbles, and sand

STEP 4

Get 1 cup of dirty water 

STEP 5

Pour dirty water into  the filter

Measurements

1 Minute : the bottle has about 1 cm of water in it. 
2 Minute : the bottle has been going faster
3 Minute: the bottle is half full and the water is gone

Warning

Make sure that an adult cuts the bottle in half. This water filter is just an experiment and should not be used for drinking water.

Avoid using charcoal briquets, as these can contain chemicals you don't want in your water. Use the activated carbon for water purifiers instead.