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Overview of Metric System. System of measure used by scientists around the world Uses prefixes and suffixes Suffixes Meter – tells us we are measuring distance, L,W,H Liter – tells us we are measuring liquid volume Gram – tells us we are measuring mass Prefixes Kilo = 1000 Hecto = 100

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Overview of metric system
Overview of Metric System

  • System of measure used by scientists around the world

  • Uses prefixes and suffixes

    • Suffixes

      • Meter – tells us we are measuring distance, L,W,H

      • Liter – tells us we are measuring liquid volume

      • Gram – tells us we are measuring mass

        Prefixes

        Kilo = 1000

        Hecto = 100

        Deka = 10

        Deci = 1/10

        Centi = 1/ 100

        Milli = 1 / 1000


Distance
Distance

  • Measures length, width, and height

  • Distance is measured in centimeters (cm) and millimeters

    (mm)

  • Meter sticks and rulers are tools used for measuring distance

  • 10 mm equal 1 cm. This allows to quickly change from mm to cm and back.

  • To move from mm to cm, move decimal one place left.

    • Example – 10.0 mm = 1.0 cm

  • To move from cm to mm, move decimal one place right

    • Example – 1.0 cm = 10.0 mm


Volume
Volume

  • Volume measures how much space something occupies

  • There are three types of volume:

    • Volume of a liquid – (ml)

    • Volume of solids – (cm cubed)

      • Volume of a straight sided solids

      • Volume of an irregularly shaped solids


Liquid volume
Liquid Volume

  • Measures how much space a liquid occupies

  • Liquid volume is measured in milliliters (ml)

  • Graduated cylinders and beakers are tools used to measure liquid volume

  • Graduated cylinders are graduated or marked so that we can measure liquid volume

  • The top of a liquid in a graduated cylinder will bend slightly. This is called a Meniscus Line. Always read a meniscus line from its lowest point


Volume of straight sided solids
Volume of Straight Sided Solids

  • Measures how much space a straight sided object takes up

  • Equation to find volume:

    • Length x Width x Height

    • Volume of solid object is always cubed

    • Volume of the cube below equals: 5 x 5 x 5 = 125 cm cubed


Volume of irregularly shaped solids
Volume of irregularly shaped solids

  • Displacement Volume

    • Found by submerging the object in water.

    • The amount of water that is moved, or displaced, tells us the volume of the object

  • A graduated cylinder or beaker is required

  • Equation is:

    • Final Water Level - Initial Water Level = Volume of object in ml

    • Convert ml to cm cubed: 1 ml = 1 cm cubed


Overview of metric system
Mass

  • Measures how much something weighs

  • Mass is measured in grams

  • Electronic scales are a tool used to measure mass


Density
Density

  • Defined as the amount of mass in a given volume.

  • Equation to find density is mass / volume.


Perimeter area volume
Perimeter, Area, Volume

  • P = S + S + S + S

    • (add all sides of object)

    • P = 5 + 5 + 5 + 5 = 20 cm

  • A = S x S

    • (always squared)

    • A = 5 x 5 = 25 cm squared

  • V = Length X Width X Height

    • (volume is always cubed for solids)

    • V = 5 x 5 x 5 = 125 cm cubed


Metric ladder
Metric Ladder

Prefixes can be used with all three measuring base words: meter (distance), liter (liquid volume), gram (mass). Base words are found in the middle of the metric ladder.

Example: kilometer, hectoliter, centigram

As you move left numbers get larger, as you move right numbers get smaller


Metric conversions
Metric Conversions

  • Use the metric ladder as your guide

  • Find your starting point and your end point on the ladder

  • Count the number of spaces to move from your starting point to your end point

  • Decide if you moved right or left on the ladder

  • Move the decimal the same number of spaces that you moved and in the direction that you moved

    • Example to convert from millimeter to decimeter you would move the decimal point two places to the left

    • 100 mm equals 1.00 dm


Temperature
Temperature

  • Measures how hot or cold something is

  • Temperature is measured in degrees Celsius or degrees Fahrenheit

  • Thermometers are a tool used to measure temperature


Temperature scales
Temperature Scales

  • Celsius Scale

  • 0 is freezing and 100 is boiling

  • Fahrenheit Scale

  • 32 is freezing and 212 is boiling


Temperature conversions
Temperature Conversions

  • Celsius to Fahrenheit

  • F = (C x 1.8) + 32

  • Fahrenheit to Celsius

  • C = ( F - 32 ) / 1.8