Dim Anal &Graphing

Dim Anal &Graphing - 1 Basic Units of Measure...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Basic Units of Measure Dimensional Analysis Graphing The Standard Units • Scientists have agreed on a set of international standard units for comparing all our measurements called the SI units – Système International = International System K kelvin temperature s second time kg kilogram mass m meter length Symbol Unit Quantity Some Standard Units in the Metric System K Kelvin Temperature s seconds Time L liter Volume m meter Length g gram Mass Abbreviatio n Name of Unit Quantity Measured 2 Length • Measure of the two-dimensional distance an object covers • SI unit = meter – About 3½ inches longer than a yard • 1 meter = one ten-millionth the distance from the North Pole to the Equator = distance between marks on standard metal rod in a Paris vault = distance covered by a certain number of wavelengths of a special color of light • Commonly use centimeters (cm) – 1 m = 100 cm – 1 cm = 0.01 m = 10 mm – 1 inch = 2.54 cm (exactly) Mass • Measure of the amount of matter present in an object • SI unit = kilogram (kg) – about 2 lbs. 3 oz. • Commonly measure mass in grams (g) or milligrams (mg) – 1 kg = 2.2046 pounds, 1 lbs. = 453.59 g – 1 kg = 1000 g = 10 3 g, – 1 g = 1000 mg = 10 3 mg – 1 g = 0.001 kg = 10-3 kg, – 1 mg = 0.001 g = 10-3 g Related Units in the SI System • All units in the SI system are related to the standard unit by a power of 10 • The power of 10 is indicated by a prefix • The prefixes are always the same, regardless of the standard unit 3 Common Prefixes in the SI System Base x 10-9 0.000 000 001 n nano- Base x 10-6 0.000 001 μ or mc micro- Base x 10-3 0.001 m milli- Base x 10-2 0.01 c centi- Base x 10-1 0.1 d deci- Base x 10 3 1,000 k kilo- Base x 10 6 1,000,000 M mega- Power of 10 Decimal Equivalent Symbol Prefix Prefixes Used to Modify Standard Unit • kilo = 1000 times base unit = 10 3 – 1 kg = 1000 g = 10 3 g • deci = 0.1 times the base unit = 10-1 – 1 dL = 0.1 L = 10-1 L; 1 L = 10 dL • centi = 0.01 times the base unit = 10-2 – 1 cm = 0.01 m = 10-2 m; 1 m = 100 cm • milli = 0.001 times the base unit = 10-3 – 1 mg = 0.001 g = 10-3 g; 1 g = 1000 mg • micro = 10-6 times the base unit – 1 μ m = 10-6 m; 10 6 μ m = 1 m • nano = 10-9 times the base unit – 1 nL = 10-9 L; 10 9 nL = 1 L Volume • Measure of the amount of three-dimensional space occupied • SI unit = cubic meter (m 3 ) – a Derived Unit • Commonly measure solid volume in cubic centimeters (cm 3 ) – 1 m 3 = 10 6 cm 3 – 1 cm 3 = 10-6 m 3 = 0.000001 m 3 • Commonly measure liquid or gas volume in milliliters (mL) – 1 L is slightly larger than 1 quart – 1 L = 1 dL 3 = 1000 mL = 10 3 mL – 1 mL = 0.001 L = 10-3 L – 1 mL = 1 cm 3 4 Common Units and Their Equivalents 2.54 centimeters (cm) exactly = 1 inch (in.) 30.48 centimeters (cm) = 1 foot (ft) 1.094 yards (yd) = 1 meter (m) 39.37 inches (in.) = 1 meter (m) 0.6214 mile (mi) = 1 kilometer (km) Length Common Units and Their Equivalents 1000 cubic centimeters...
View Full Document

{[ snackBarMessage ]}

Page1 / 29

Dim Anal &Graphing - 1 Basic Units of Measure...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online