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Catalyst

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

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  1. 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.

  2. OBJECTIVES SWBAT: -explain why we need the metric system - distinguish between metric units - understand why we need different sized units

  3. 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

  4. 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!

  5. 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

  6. 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!

  7. Metric System – Base Units Pay attention to the symbols!

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

  9. 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

  10. 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

  11. Metric Prefixes Units get smaller Units get larger

  12. Metric Prefixes Mnemonic Device – will help us remember the metric prefixes

  13. 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)

  14. 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) =

  15. 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) =

  16. 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) =

  17. 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)

  18. 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) =

  19. 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)

  20. 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

  21. 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

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

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