The metric system
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The Metric System. Add these notes in your foldable. Length. Basic unit = meter Other units include: Millimeter (mm) used to measure small objects i.e. top of a stick pin Centimeter (cm) used to measure length of paper Meter (m) used to measure soccer fields

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The Metric System

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The metric system

The Metric System

Add these notes in your foldable.


Length

Length

  • Basic unit = meter

  • Other units include:

    • Millimeter (mm) used to measure small objects i.e. top of a stick pin

    • Centimeter (cm) used to measure length of paper

    • Meter (m) used to measure soccer fields

    • Kilometer (km) used to measure long distances like roads (similar to miles)

    • Light years - distance light travels in one year. Used to measure from Earth to other planets


Length continued

Length continued

  • 10mm = 1 cm

  • 100 cm = 1 meter

  • 1000 m = 1 km

  • Kilo/hecto/deka/m,l,g/deci/centi/milli

  • Kids have died by drinking chocolate milk.

  • Kilo = one thousand

  • Centi = one hundredth

  • Milli = one thousandth


Temperature

Temperature

  • Basic unit = Celcius

  • 2 Fixed points

    • 0°C = freezing

    • 100°C = boiling

    • Other Comparisons

      21°C = room temperature

      37°C = body temperature


Density

Density

  • Basic unit = grams per milliliters (g/mL)

  • Density = relationship between mass and volume

  • Formula =mass

    volume

    Density of water = 1 g/mL

    Density is less than 1 g/mL = floats

    Density is more than 1 g/mL = sinks


Volume

Volume

  • Basic unit = Liter (L)

  • Volume = amount of space an object takes up.

  • 3 ways to measure

    • 1. Regular Solid = l x w x h = cm3

    • 2. Liquid = pour in grad. Cylinder and read proper unit i.e. mL

    • 3. Irregular objects = use water displacement method i.e. 200 mL to 220 mL = 20 mL volume

      • Units used: mL for liquids or cc/cm3 1cm3=1mL


The metric system

Mass

  • Basic unit = kilogram (kg)

  • Mass = measure of amount of matter in an object.

  • Units used

    • Kg = measure large objects like humans

    • Grams= measure small objects like mice

      • Ex. Nickel = 5 grams; dollar bill = 1 g

    • Mg = measure very little things like crumbs


Mass continued

Mass continued

  • Mass is constant; weight is not.

  • Mass will stay the same if you go to the moon.

  • Your mass on Earth is the same as on the moon.

  • Your body mass won’t change if you go to another planet.


Weight

Weight

  • Basic unit = Newton (N)

  • Weight = measure of attraction between 2 objects due to GRAVITY.

  • Gravity = force of attraction


Weight continued

Weight continued

  • Weight can change on other planets due to different gravitational pulls on each planet.

  • For Example:

    • Weight on Earth = 60 lbs.

    • Weight on moon = 10 lbs. (1/6th)


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