# data[].attributes.body
A graduated cylinder is used to measure liquid volume.

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The triple beam balance is used to measure masses very precisely

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The degree of compactness of a substance.
https://en.oxforddictionaries.com/definition/density

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An amount or quantity of something, especially when great.
https://en.oxforddictionaries.com/definition/volume

# data[].attributes.body
A large body of matter with no definite shape
https://en.oxforddictionaries.com/definition/mass

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Seven base quantities assumed to be mutually independent

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A test where the person conducting the test only changes one variable at a time in order to isolate the results.
http://www.yourdictionary.com/control-experiment#dFFCxHrz7dirXGDu.99

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The one that is observed and likely changes in response to the independent variable
https://www.mansfieldct.org/Schools/MMS/staff/hand/Variables.htm

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A manipulated variable is the independent variablein an experiment. It's called “manipulated” because it's the one you can change. ... The controlled variableis the one that you keep constant. The responding variable or variables is what happens as a result of the experiment
www.statisticshowto.com/manipulated-variable/

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A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
https://en.oxforddictionaries.com/definition/hypothesis

# data[].attributes.body
The ability to notice things, especially significant details.
https://en.oxforddictionaries.com/definition/observation

# data[].attributes.body
A conclusion or opinion that is formed because of known facts or evidence
https://www.merriam-webster.com/dictionary/inference

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The diverse ways in scientist study the natural world and propose explanations based on the evidence they gather.
***Textbook Page 13***