Step 7: Water Displacement Method

A method of finding the volume of a sphere with minimal calculations is to use the Water Displacement Method:

  • Fill a beaker or graduated cylinder with enough water to completely immerse the sphere in.
  • Record the baseline initial measurement
  • Drop the sphere in
  • Record final measurement
  • Subtract the initial volume from the final volume ~ this is the volume of the sphere!
Dude, GREAT instructable! Still, more to do on your description of the Water Displacement method. You need to explain that the way to find the meniscus is to put you eye level to the flask (or in this case tube), and get the lowest point on the water. And, this method is almost always an estimate, because of the inaccuracy of the water level. That is the main reason that most math teachers don't have a tube and a sphere ready on your tests. It's pretty different with science teachers, because we(referring to me :) almost always have a flask ready, some marbles, and usually the water.<br/>There is also a method to do this with gas, but I did not include it in my &quot;Volume of a sphere.&quot; Otherwise, yours is pretty good, from my standpoint.<br/>You can check mine out, <a rel="nofollow" href="http://www.instructables.com/id/Volume_of_a_Sphere/">here</a>.<br/>

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