Notes #2 Quarter #1
Kilo- 10^3 1,000 k
Hecto-10^2 100 h
Deca 10^1 10 da
Unit10^0 1 1
Deci 10^-1 1/10 or .1 d
Centi 10^-2 1/100 or .01 c
Milli 10^-3 1/1000 or .001 m
The unit if describing mass, is written as g a gram.
For volume the unit is a Liter. (L)
For length the unit is a meter. (m)
1. Every numbering system has a base unit.
2. In the Roman system, the base unit was 12.
3. Measurement of time, seconds and minutes, come from the Babylonian usage of the base 60.
4. The binary system is used in computers.
5. The two most commonly used systems today are the English and Metric systems.
6. The cubit is the distance between the point of the elbow to the middle finger of the outstretched hand.
7. Span is the length between the tips of the thumb and the little finger of the outstretched hand.
8. Palm is the width of four fingers, or 3 inches.
9. Digit is the width at the middle of the middle finger or 3/4 inch.
10. A fathom is equal to the length of the outstretched arms, or 6 feet
.
11. An inch is the width of the thumb.
12. A yard is the length from the nose to the tip of the thumb on an outstretched arm.
13. A hand is equal to 4inches or 1/3 of a foot.
14. The metric system began in France.
15. 80% of countries use the metric system as their standard of measurement.
16. Since water is one of the most common substances of nature, it was chosen as the standard. The gram is the mass of one milliliter of water at 4 degrees celsius.
A cube with each side equaling 1cm has a volume of 1cubic cm.
It can be written as : 1cubic cm, 1cc or 1cm^3
or, 1cm cubed = 1mL= 1g of mass of water
Length is a cm.
Volume is a mL.
Mass is a g.