Question

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

Answer 1

Answer:

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.

Explanation:

An order of magnitude is the class of scale of any amount in which each class contains values of a fixed ratio to the class preceding it. ... The order of magnitude of a physical quantity is its magnitude in powers of ten when the physical quantity is expressed in powers of ten with one digit to the left of the decimal.

Answer 2

Significant figures :

In any measurement, the reliable digits plus the 1st uncertain digit are known as significant figures.