Notice how it looks and smells.
Water filtration unit experiment.
2 glass jars sand gravel 3 4 coffee filters dirty water a plastic cup with a hole cut in the bottom.
The first glass will serve as the control.
You will need a few supplies.
We went to a little pond nearby to collect some water.
The second glass will be dirty dirty the dirty water with materials found around the house.
In this activity students are challenged to design and build a water filtration device using commonly available materials following the same design process used by the engineers and scientists who developed the international space station water recovery system for nasa.
Put the lid on the bottle and shake vigorously for 30 seconds.
How to do the water filtration experiment.
Begin by getting a jar full of dirty water.
For this experiment it is best to test the water before and after the filtration.
To start ask the child to make a hypothesis or prediction about the experiment.
Once filtering is complete have them bring the test tubes to you for observation.
Again notice how the water looks and smells.
Then pour the water back and forth between the two cups about 10 times.
Decide if the water is a b or c grade and help them measure their sample in a graduated cylinder.
To meet this challenge students use an iterative process as they build test and measure the performance of the filtration device analyze the data collected and use this information to work toward an improved.
So many people get sick from their own drinking water.
Pour the water into the bottle with its top cut off.