This experiment aims to demonstrate that even in the ground there air.
Required materials: A glass containing enough dry land and not clay and water
Procedure: Take the glass in the ground.
Pour in a bit 'of water very slowly
Pour in a bit 'of water very slowly
After some seconds you will see the "foam" or white bubbles: this is evidence that there is air in the soil.
Text and photos by Renato Taccogna
