What 2 Ways Can Volume Be Measured?


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1) add some water to a graduated cylinder, add a rock, fill to the line
with water, remove the rock. The volume reduction in the cylinder
equals the volume of the rock.

2) Pack a soil sample in a graduated container to the top. Add water
until no more will go into the cup. Let sit over night and add more
water, if needed, to the top. Weigh the wet soil/water mix.  
Oven dry at 105 deg. C overnight and weigh the oven dried soil. The
loss in weight (grams) is the void space (cubic centimeters) in the
soil.  Void space in the soil / volume of container X 100 is
percent total void space by volume. 

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