Thứ Sáu, 30 tháng 9, 2011

TESTING FOR THE CONTENTS OF SAND

Let's see the contents of the soil.


Materials:
Water
Test tube
Sand


Instructions


Fill the test tube with 1/4 of sand.


Now add 3/4 water to the same test tube.


Shake the contents vigorously and leave the test tube alone for 1 hour.


The soil will settle down in layers!


Write down your observation and do this experiment with different samples of soil!!!

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