Question

iv) Describe what is meant by significant
figures and order of magnitude.​

Answer 1

Answer:

significant figure

The term significant figures refers to the number of important single digits (0 through 9 inclusive) in the coefficient of an expression in scientific notation . The number of significant figures in an expression indicates the confidence or precision with which an engineer or scientist states a quantity.

order of magnitude

An order of magnitude is an exponential change of plus-or-minus 1 in the value of a quantity or unit. The term is generally used in conjunction with power-of-10 scientific notation. ... A decrease of two orders of magnitude is the equivalent of multiplying by 0.01, or 10-2.

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