Chapter 2.1 vocab

Question 1

conversion factor

Answer 1

is a ratio of 2 different units that has a value of 1 even though numbers are different

Question 2

dimensional analysis

Answer 2

is a technique of using ratios that have a value of one to change that units of a quantity by cancelling out units

Question 3

mantissa

Answer 3

The decimal number that multiplies the power of 10 in scientific notation

Question 4

accuracy

Answer 4

a measurement describes how close the measured value is to the known value.

Question 5

scientific notation

Answer 5

A way to make big numbers smaller

Question 6

exponent

Answer 6

the power of 10 for a number written in scientific notation.

Question 7

precision

Answer 7

how close measurements of the same item are to each other

Question 8

significant figures

Answer 8

way of recording data that tells the reader how precise a measurement is.

Question 9

resolution

Answer 9

an instrument is the smallest measured difference that can be sensed or displayed.