Tsunades Beautiful Boobs

Hive Whenever there is less water and more pollution

Source: EFE

passed World Water Day , but the essential element for humans is still news. And is that the authorities continue to warn Japan of the danger it poses to ingest smaller tap water due to high levels of radioactive ontaminación c acquired after the incident Fukushima nuclear plant.

Add these incidents say indirectly as a result of human action, the fact that much of our planet's water is unfit for human consumption because of its high degree of c chemical or biological ontaminación , we see that every time there is less water for daily consumption. It is for this reason that water purification is an important method that all children have to know, and that man is the only way to harness the river water, rain, aquifers, etc.

For this reason, we propose you from a Educambiente simple but practical experiment that lets you teach younger children in what is one of the most common methods of water purification : scrubbing filtration (method in which water is passed through beds of sand and gravel for the water too turbid to become transparent and particles trapped in the muddy sand and gravel).

Source: Paloma Garaboa Bort

Materials:

sand gravel

plastic bottle scissors

cotton

2 cups transparent turbid

Steps:

1. full of muddy water (water that have collected such a pool) a transparent vessel.
2. Cut the plastic bottle at the bottom.
3. Keep the bottle with the top to bottom, and then introduces the material in the following order: cotton, sand and gravel.
4. Place the empty glass under the spout of the bottle and slowly pour the muddy water in the new "home sewage" we have built.

With this method we have to filter water before it was cloudy now is clear. You have to explain to children not so this is already drinking water (to be should spend a biological analysis performed by professionals). There is water fit for human consumption, yet another that can be used to water plants for example.

When a water is considered contaminated, this technique is used to apply a variant that involves placing a special charcoal filters, including sand and gravel, which adhere to particles and microorganisms.

Dare now with this new fun and easy experiment that you propose to teach the little ones something new! Surely they are willing to do that in class.