Metric System

Question 1

Metric System

Answer 1

System of measurement used everywhere in the world and in the sciences (including medicine)

• Except U.S , Myanmar, Liberia

Question 2

what are the commonly used Units of the Metric system

Answer 2

Measurement : Length , Volume, Mass, Time, Temperature

Units : meters (M) , liters(L), grams (g), seconds (sec), celsius ( c)

Question 3

SI base units of Measurement

Answer 3

> Mass= the grams (g) 
- The weight of paper clip 
> Length = the meter (m) 
- A little longer than a yard stick 
> Volume= the liter (L) 
- A little more than a quart 
> Temperature= degrees celsius -c

Question 4

Metric Prefixes

Answer 4

• the metric system uses prefixes to represent units smaller and larger than the fundamental unit by factors of 10.
• For example; a kilometer is 1000 times a meter
• Prefixes are very convenient when working with extremely large or small units of measure
• instead of 0.000000075 grams (g), we can say 75 nanograms (ng)

Question 5

Prefixes

Answer 5

-one of the clever ideas behind the system was to use only multiples of ten

Question 6

Commonly used prefixes of the Metric System

Answer 6

• Kilo ( k)
• Deci (d)
• Centi (c)
• Milli (m)
• Micro (mc or U)
• Nano (n)

Question 7

Metric system Prefixes are expressed as fraction or in scientific notation

Answer 7

Kilo- 1,000 or 10^3
Deci- 1/10 or 10^-1 
Centi- 1/100 or 10^-2 
Milli- 1/1000 or 10^-3
Micro - 1/1,000,000 or 10^-6 
Nano- 1/ 1,000,000,000 or 10^-9

Question 8

The units are combined with the prefixes

Answer 8

• Micro + meter = micrograms ( um)
• Kilo+gram = kilogram (kg)
• Milli+ liter= milliliter (ml)
• Nano+ meter = nanometer ( nm)
• Micro + gram = microgram ( mcg/ug)
• Milli + meter = millimeter ( mm)

Question 9

memorized the equivalencies

Answer 9

1in = 2.54 cm

1cm= 0.39 in

1min= 60 sec

1ft = 12 in

1kg = 2.2 kg

1lb = 0.454kg

pure H20:
1ml= 1cm^3= 1g