Tuesday, September 20, 2011

Measurement Practice Questions

1. Accuracy is how close the measurements are to the correct value.  Precision is how close each measurements are to each other.
2. An electronic balance is precise and accurate, but a triple beam balance is precise and not accurate.
3. A significant digit is all non-zero digits.
4. According to my data, there would be 1,999.273 grams in 2 Liters.
Summary:
I did not know how to find a volume of an object.  I learned that to do that, you need to fill a graduated cylinder with water and put the object in.  However many milliliters the water rose is the volume.  I also learned about a significant digit and the difference between precise and accuracy.  I learned that it is very important to be as precise as possible.

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