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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

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
slide7
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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