T3 Measurements, Significant Digits and Data Analysis

Question 1

significant zeros are

Answer 1

sandwiched or trailing to the right of decimal NOT leading

Question 2

in a valid measurement

Answer 2

record 1 estimated digit

Question 3

exact numbers have _ sig figs

Answer 3

infinite

Question 4

1.40 # sig figs

Answer 4

3

Question 5

add or subtract rounded to

Answer 5

decimal places of # with the least in calculation

Question 6

Mult. or divide rounded to

Answer 6

sig figs of # with least in calculation

Question 7

remember

Answer 7

units!

Question 8

trailing zeros

Answer 8

DO NOT COUNT only if after decimal

Question 9

(scientific notation is 2 parts : coefficient and power of 10)
COEFFICIENT=

Answer 9

1-10 can include 1 but not 10

Question 10

go –> in scientific notation

Answer 10

• negative

Question 11

dimension analysis

Answer 11

converts given quantity and unit into a different unit

Question 12

dimension analysis most important thing is..

Answer 12

cross cancelling

Question 13

certain digits

Answer 13

all #s read directly off of the measuring device plus 1 extra estimated digit

Question 14

amount of definite digits depends on the

Answer 14

measuring device

Question 15

in a valid measurement the estimated measurement corresponds to

Answer 15

one tenth of the smallest marks on the instrument

Question 16

accuracy

Answer 16

how close it is to the true/accepted value