Subterranean Irrigation Systems Ground Water is that which is trapped beneath the ground. Rain that soaks into the ground, rivers that disappear beneath the earth, melting snow are but a few of the sources that recharge the supply of underground water. Visit the following websites and read them together. Here's a little experiment to show you how artesian pressure works. Fill a plastic baggie with water, put a straw in through the opening, tape the opening around the straw closed, DON'T point the straw towards your teacher, and then squeeze the baggie.
Artesian water is pushed out through the straw.
Put water and food colouring into the jar. Put white flowers and celery into jar. In the morning, look at the colour of the flowers and the celery. Look up the rivers Tigris and Euphrates on a map. Explain why this can't be the spot of the Garden of Eden, as some mistakenly believe.