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Catalyst. Set up your C ornell notes by: Putting the heading (metrics) at the top left Gluing the notes on the right side. Answer the catalyst questions on your notes Turn in your SCIENTIST picture. OBJECTIVES. SWBAT: -explain why we need the metric system

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catalyst
Catalyst
  • Set up yourCornell notes by:
    • Putting the heading (metrics) at the top left
    • Gluing the notes on the right side.
  • Answer the catalyst questions on your notes
  • Turn in your SCIENTIST picture.
objectives
OBJECTIVES

SWBAT:

-explain why we need the metric system

- distinguish between metric units

- understand why we need different sized units

english system
English System
  • You are familiar with inches, feet, miles, pounds, quarts, and so on.
    • This is not an easy system!
      • How many inches in 1 foot?
        • 12 inches
      • How many feet in a yard?
        • 3 feet
      • How many yards in a mile?
        • 1760 yards
metric system
Metric System
  • Metric system is decimalized, meaning it has a base of 10
    • This means that each unit is 10 times bigger or smaller than the next.
    • This makes it much easier!
why do we use the metric system
Why do we use the Metric System?
  • We use the metric system because we can easily manipulate metric units into more useful sizes and measures.
    • We start with a base unit and manipulate it to make smaller or bigger
slide6

Metric System

  • Another goal of the metric system is to have a single unit for any physical quantity across the world.
  • This allows scientists to communicate in a standard mathematical language regardless of where they come from!
slide7

Metric System – Base Units

Pay attention to the symbols!

base units
Base Units
  • Meter  length
    • Length of a table
    • Height of a person
  • Gram  mass
    • Mass of a pencil
    • Mass of a calculator
base units1
Base Units
  • Seconds  time
    • Time for a pencil to fall to the ground
  • Liters  liquid volume
    • Amount of liquid in a monster can
    • Amount of water in a cup
metric prefixes
Metric Prefixes
  • In the English system, there are inches, feet, yards, and miles to measure length
  • In the metric system, we add prefixes to our base units to create larger and smaller units
    • Prefix- placed at the beginning
metric prefixes1
Metric Prefixes

Units get smaller

Units get larger

metric prefixes2
Metric Prefixes

Mnemonic Device – will help us remember the metric prefixes

prefixes base units
Prefixes + Base Units
  • To create smaller or larger units we combine the prefixes with the base units
    • Kilo (k) + meter (m) = kilometer (km)
    • Kilo (k) + gram (g) = kilogram (kg)
prefixes base units1
Prefixes + Base Units
  • To create smaller or larger units we combine the prefixes with the base units
    • Kilo (k) + meter (m) = kilometer (km)
    • Kilo (k) + gram (g) = kilogram (kg)
    • Centi (c) + liter (l) =
prefixes base units2
Prefixes + Base Units
  • To create smaller or larger units we combine the prefixes with the base units
    • Kilo (k) + meter (m) = kilometer (km)
    • Kilo (k) + gram (g) = kilogram (kg)
    • Centi (c) + liter (l) = centiliter (cl)
    • Milli (m) + second (s) =
prefixes base units3
Prefixes + Base Units
  • To create smaller or larger units we combine the prefixes with the base units
    • Kilo (k) + meter (m) = kilometer (km)
    • Kilo (k) + gram (g) = kilogram (kg)
    • Centi (c) + liter (l) = centiliter (cl)
    • Milli (m) + second (s) = millisecond (ms)
    • Milli (m) + meter (m) =
prefixes base units4
Prefixes + Base Units
  • To create smaller or larger units we combine the prefixes with the base units
    • Kilo (k) + meter (m) = kilometer (km)
    • Kilo (k) + gram (g) = kilogram (kg)
    • Centi (c) + liter (l) = centiliter (cl)
    • Milli (m) + second (s) = millisecond (ms)
    • Milli (m) + meter (m) = millimeter (mm)
prefixes base units5
Prefixes + Base Units
  • Now you try
    • Hecta (H) + meter (m) =
    • deci (d) + gram (g) =
    • Centi (c) + meter(m) =
    • Deca(D) + second (s) =
    • Kilo (k) + liter (l) =
prefixes base units6
Prefixes + Base Units
  • Now you try
    • Hecta (H) + meter (m) = Hectameter (Hm)
    • deci (d) + gram (g) = decigram (dg)
    • Centi (c) + meter(m) = centimeter (cm)
    • Deca(D) + second (s) = Decasecond (Ds)
    • Kilo (k) + liter (l) = kiloliter (kl)
how big are the prefixed units
HOW BIG ARE THE PREFIXED UNITS?
  • Kilometers - distances between cities
  • Meters – height of people
  • Millimeters – length of ants.
  • Kilograms – mass of people
  • Grams – mass of drops of water
  • Milligrams – mass of medicinal tablets
summary questions
Summary/Questions
  • What is the metric system?
  • What are metric units?
  • What are metric prefixes?

Take 4 minutes to write your summary for today and then questions and headings on the left side of the notes

reminders
REMINDERS
  • Homework packet #1 due Friday!
  • Quiz 1 on Friday
  • Get a science fair notebook by Wednesday