Saturday, April 21, 2012

HOW DO SOIL LOOSE THEIR NUTRIENTS DURING LOTS OF RAIN???

Do you know soil loose their nutrients during lots of rain or excessive
water?? Let's see how!


Materials:
1/2 cup of dry soil


Blue powdered tempera paint


A measuring spoon


A measuring cup


A wide mouthed jar


Coffee filter paper


A few cups


Water


Instructions

Mix 1/4 teaspoon of blue tempera paint to 1/2 cup of soil thoroughly.

Set the funnel into the jar and put the coffee filter paper into the funnel.

Now pour the soil mixture into the funnel and add 1/2 cup water into the funnel.

Observe the color of the water. Repeat the experiment again and again without changing the soil, but do change the container and the filter paper

Observe: After some time the water coming in to the jar will be clean and transparent. At first the water will be in blue in color, but as you repeat the process the water will become more transparent

This process happens with soil in the nature. The blue powdered tempera color can be thought as nutrients in soil!






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