Units and Measurements

Flashcards on Units and Measurements based on lecture notes.

Mili

1/1000

Centi

1/100

Deci

1/10

Kilo

1000

SI or Metric System

International system of units, sometimes referred to as the decimal system (based on the number 10).

Area unit

Square meter

Volume unit

Cubic meter

Speed/velocity unit

Meter per second

Density unit

Kilogram per cubic meter

Base unit of length

Meter

Commonly used units of Length

Millimeter, Centimeter, Meter, Kilometer

Units of area

Square millimeter, Square centimeter, Square meter, Square kilometer

Calculating areas

Squares and rectangles - length x width, Circles - πr²

Converting area units

10², 100², 1000²

Mass

The amount of matter in an object, measured in g or kg.

Inertia

Tendency of objects to remain in motion or stay at rest unless acted upon by outside force.

Weight

A measure of the force of attraction between any two object that have mass.

Metric unit for weight

Newton (N)

Units of volume (solid)

Cubic millimeter, Cubic centimeter, Cubic decimeter, Cubic meter

Units of volume (liquid)

Liter (L), Milliliter (mL), 1cm³ = 1mL

Density

Density = mass / volume

Units of density

Grams per cubic centimeter (g/cm³), Kilograms per cubic meter (kg/m³)

Converting between different units of density

To convert from kg/m³ to g/cm³ divide by 1000, To convert from g/cm³ to kg/m³ multiply by 1000

Galileo thermometer

Less dense bubbles float up

Mass against Volume Graphs

Different slopes because the substance have different density

Slope in Mass against Volume Graphs

Higher density = steeper slope, Smaller density = less steep slope