# Using SI Units - Ms. Karen Wessel Using SI Units p. 38-45 Table of Base SI Units Quantity Unit Symbol Length Meter M

Mass Kilogram kg Time Second S Current

Ampere A Temperature Kelvin K METRIC CHEATER CHART CONVERTING LOWER TO HIGHER UNITS: If the unit becomes larger, the value become smaller. So, the decimal place moves to the left. (Divide by units of 10)

Kilo k Hecto h Deka da Basic Unit Deci d

CONVERTING HIGHER TO LOWER UNITS: If the unit becomes smaller, the value gets larger. So, the decimal place moves to the right. (Multiply by units of 10) Centi c Milli m How many centmeters are in 1.98 meters? What unit are you starting with? What unit do you want to convert

to? METRIC CHEATER CHART CONVERTING LOWER TO HIGHER UNITS: If the unit becomes larger, the value become smaller. So, the decimal place moves to the left. (Divide by units of 10) Kilo k Hecto h Deka

da Basic Unit Deci d CONVERTING HIGHER TO LOWER UNITS: If the unit becomes smaller, the value gets larger. So, the decimal place moves to the right. (Multiply by units of 10) Centi c

Milli m 1.98 m = 198 cm Move the decimal 2 places to the right! How many centimeters are in 253.8 km? What unit are you starting with? What unit do you want to convert to? METRIC CHEATER CHART

CONVERTING LOWER TO HIGHER UNITS: If the unit becomes larger, the value become smaller. So, the decimal place moves to the left. (Divide by units of 10) Kilo k Hecto h Deka da Basic Unit

Deci d CONVERTING HIGHER TO LOWER UNITS: If the unit becomes smaller, the value gets larger. So, the decimal place moves to the right. (Multiply by units of 10) Centi c Milli m 253.8 km = 25,380,000

cm Move the decimal 5 places to the right! A bookshelf is 75 cm wide. How many decimeters is this? How many meters is this? METRIC CHEATER CHART CONVERTING LOWER TO HIGHER UNITS: If the unit becomes larger, the value become smaller. So, the decimal place moves to the left. (Divide by units of 10)

Kilo k Hecto h Deka da Basic Unit Deci d

CONVERTING HIGHER TO LOWER UNITS: If the unit becomes smaller, the value gets larger. So, the decimal place moves to the right. (Multiply by units of 10) Centi c Milli m 75 cm = 7.5 dm 75 cm = .75 m Volume

The amount of space occupied by an object. Length x Width x Height Units = cubic. Cubic centimeters = cm3

Cubic meters = m3 Liquid volume Liter QuickTime and a decompressor are needed to see this picture. Derived Units Units that are made by combining other SI

units Meter x Meter x Meter = M3 Mass The amount of matter in an object. SI unit = kg Use a balance to measure mass. Density

The mass per unit volume of a material. Density is a derived unit. Mass/volume g/cm3 Time

The interval between two events SI unit = seconds (s) QuickTime and a decompressor are needed to see this picture. Temperature Measured with thermometer Celsius scale

Freezing point of water = 00C Boiling point of water = 1000C SI unit = Kelvin Absolute zero = 273 K = -2730C Ch. 2.2 Graphing Graphing (p.48-51) Types

of graphs What are graphs used for? To display information or data Can be used to visually compare data Different types of graphs are used to display different types of data.

Line Graph shows the relationship between 2 variables Change over time Dependent Variable A. Types of Graphs

Independent Variable A. Types of Graphs Bar Graph shows information collected by counting A. Types of Graphs

Pie Graph shows distribution of parts within a whole quantity

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