Lecture 4 - Measurement

Question 1

what is the metric measurement of length?

Answer 1

meters (m)

Question 2

what is the metric measurement of mass?

Answer 2

grams (g)

Question 3

what is the metric measurement of volume?

Answer 3

liters (L) (l x w x h)

Question 4

what is the metric measurement of time?

Answer 4

seconds (s) (no prefixes)

Question 5

mega-

Answer 5

(M) - million - 1,000,000 - 10^6

Question 6

kilo-

Answer 6

(k) - thousand - 1,000 - 10^3

Question 7

deci-

Answer 7

(d) - tenth - 0.1 - 10^-1

Question 8

centi-

Answer 8

(c) - hundredth - 0.01 - 10^-2

Question 9

milli-

Answer 9

(m) - thousandth - 0.001 - 10^-3

Question 10

micro-

Answer 10

millionth - 0.000001 - 10^-6

Question 11

nano-

Answer 11

(n) - billionth - 0.000000001 - 10^-9

Question 12

a zero is significant when it occurs:

Answer 12

• between 2 non-zero digits
• at the end (far right) of a number with a decimal place

Question 13

a zero does not count as a significant figure when it occurs:

Answer 13

• at the beginning of a number
• at the end of a number that does not have a decimal

Question 14

what are exact numbers?

Answer 14

the result of counting objects

Question 15

what are inexact numbers?

Answer 15

the result from a measurement or observation and contains some uncertainty