Catalyst

1 / 22

# Catalyst - PowerPoint PPT Presentation

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

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Catalyst
• Set up yourCornell notes by:
• Putting the heading (metrics) at the top left
• Gluing the notes on the right side.
• Turn in your SCIENTIST picture.
OBJECTIVES

SWBAT:

-explain why we need the metric system

- distinguish between metric units

- understand why we need different sized units

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 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?
• 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

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!

Metric System – Base Units

Pay attention to the symbols!

Base Units
• Meter  length
• Length of a table
• Height of a person
• Gram  mass
• Mass of a pencil
• Mass of a calculator
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
• 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 Prefixes

Units get smaller

Units get larger

Metric Prefixes

Mnemonic Device – will help us remember the metric prefixes

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