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Eye-Balling? Rough Guess? Educated guess?
amount of matter making up an object(the answer is Mass)mass
[object Object]
The term 'in an experiment' is a prepositional phrase.The noun 'experiment' is the object of the preposition 'in'.
height measurement is the accurate and dependable measurement for a man, object or anything.
Making some sound (ringing a bell, dropping an object, etc.) inside a vacuum.
[object Object]
density.
force is the measurement
A constant in an experiment is the object or value that does not change through out the experiment.
I believe the first experiment measure the length of shadows at two widely separated locations. They used an object of known lenght and took the measurement at the same time of day. The shadows were different lengths that indicated the sun was at a different angle.
Area is the measurement of the two-dimensional size of an object, and volume is the measurement of the size of an object in three dimensions.