Using SI Units p. 38-45.

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Presentation transcript:

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

How many centmeters are in 1.98 meters? What unit are you starting with? What unit do you want to convert to?

Move the decimal 2 places to the right! 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?

Move the decimal 5 places to the right! 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 A bookshelf is 75 cm wide. How many decimeters is this? How many meters is this?

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

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)

Temperature Measured with thermometer Celsius scale SI unit = Kelvin Freezing point of water = 00C Boiling point of water = 1000C SI unit = Kelvin Absolute zero = 273 K = -2730C

Graphing (p.48-51) Types of graphs 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.

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