To manage and conserve Texas' dwindling water supplies, future decision makers will need to be educated about the scientific background and complex issues associated with this critical resource. The water table may be only a foot below the ground’s surface or it may be hundreds of feet down. The top of this zone is called the water table… just remember the top of the water is the table. The area where water fills these spaces is called the saturated zone. Groundwater is water that is found underground in the cracks and spaces in soil, sand, and rocks. Where does the water go? The water moves into the spaces between the particles of the sand. Imagine pouring a glass of water onto a pile of sand. Some of it flows along the surface in streams or lakes, some of it is used by plants, some evaporates and returns to the atmosphere, and some sinks into the ground. Cover the aquarium with tight fitting plastic wrap and observe.When rain falls to the ground, the water does not stop moving. You can create a real lake and river and also include some greenery if you'd like. If you are particularly adventurous, try making a model village inside a small aquarium. Conversely, each day you will see more and more water droplets on the inside of the plastic bag. Each day the water level will be lower and lower. This is evident by marking the water level. What you should see: Over the course of several days, water will evaporate. If at all possible, try to do this without removing the plastic bag completely. Step 3-Each day, at about the same time, mark the water level. Step 2-Put the cup in a sunny window and place the plastic baggy over the cup. Mark the water level on the side of the cup with a permanent marker and write the date next to the mark.
Step 1-Fill the plastic cup with tepid water. a regular sized (about 8 oz.) plastic cup.
To help kids understand concepts related to the water cycle, you can actually simulate the water cycle at home and watch it in action with this simple model.
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