Measurements And Calculations

Question 0

Some Fundamental SI Units

Answer 0

Mass…kilogram…kg
Length…meter…m
Time…second…s
Temperature…kelvin…K

Question 1

Equivalents between the English and metric systems.

Answer 1

Length 
1m=1.094yd 
1m=39.37inches
2.54 cm=1in
1mi=5280ft
1mi=1760yd

Mass
1kg=2.205lb
453.6g=1lb

Volume
1L=1.06qt
1ft*3=28.32L

Question 2

The Commonly Used Prefixes in the Metric System

Answer 2

Mega...M...1,000,000...10*6
Kilo...k...1000...10*3
Deci...d...0.1...10*-1
Centi...c...0.01...10*-2
Milli...m...0.001...10*-3
Micro...?...0.000001...10*-6
Nano...n...0.000000001...10*-9

Question 3

The Metric System for Measuring Length

Answer 3

Kilometer...km...1000m or 10*3m
Meter...m...1m
Decimeter...dm...0.1m or 10*-1m
Centimeter...cm...0.01m or 10*-2m
Millimeter...mm...0.001m or 10*-3m
Micrometer...?m...0.000001m or 10*-6m
Nanometer...nm...0.000000001m or 10*-9m

Question 4

Scientific Notation

Answer 4

Simply expresses a number as a product of a number between 1 and 10 and the appropriate power of 10.

i.e. 93,000,000 = 9.3 x 10,000,000 = 9.3 x 10*7

Question 5

Unit

Answer 5

Tells us what scale or standard is being used to represent the results of the measurement.

Question 6

Define Volume

Answer 6

The amount of three-dimensional space occupied by a substance.

Question 7

Mass

Answer 7

The quantity of matter present in an object.

Question 8

The relationship of the Liter and Milliliter

Answer 8

Liter…L…1L=1000mL

Milliliter…mL…1/1000L=10*-3L=1mL

Question 9

The most commonly used Metric Units for Mass

Answer 9

Kilogram…kg…1000g = 103g = 1kg
Gram…g…1g
Milligram…mg…0.001g = 10-3g = 1mg