Why is it important that scientists have the

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Why is it important that scientists have the same units of measurement? Questions of

Why is it important that scientists have the same units of measurement? Questions of the Day What do you think would happen if scientists did not use the same measurements all over the world? Give 3 “real world examples” where you have seen SI units (m, g, L).

The Metric System, Dimensional Analysis, and Significant Figures

The Metric System, Dimensional Analysis, and Significant Figures

Use a variety of notations appropriately (e. g. exponential, functional, square root). Objectives Select

Use a variety of notations appropriately (e. g. exponential, functional, square root). Objectives Select and apply Make Use Select and apply an appropriate method (e. g. , mental mathematics, paper and pencil, or technology) for computing with real numbers, and evaluate the reasonableness of results. Make decisions about units, scales, and measurement tools that are appropriate for problem situations involving measurement. Use concepts of length, area, and volume to estimate and solve real-world problems.

BASIC UNITS COMBINE WITH PREFIXES TO MAKE A FINAL AMOUNT Metric System Basic SI

BASIC UNITS COMBINE WITH PREFIXES TO MAKE A FINAL AMOUNT Metric System Basic SI Units Common Prefixes Meter – m (length) Micro – u 1/1000000 Gram – g (mass) Milli – m 1/1000 Liter – L (volume) Centi – c 1/100 Kelvin – K (temperature) Kilo – k 1000

SI Units • 1 kg = kilo (1000) gram = 1000 grams • 1

SI Units • 1 kg = kilo (1000) gram = 1000 grams • 1 gram = 1/1000 kilogram =. 0001 kg • 1 mm = milli (1/1000) meter = 1/1000 of a meter • 1 meter = 1000 millimeters = 1000 mm • 1 u. L = micro (1/1000000) liter = 1/1000000 of a liter • 1 liter = 1000000 microliters = 1000000 u. L

SI Units

SI Units

Quick Check! Convert each to the unit in parentheses • 257 g (kg) •

Quick Check! Convert each to the unit in parentheses • 257 g (kg) • 22 mm (cm) • 354 d. L (L) • 5 L (m. L) • 13 kg (cg) • King Henry Doesn’t Usually Drink Chocolate Milk • k – h – da – UNIT – d – c – m

SI Derived Units

SI Derived Units

Convert 52. 7 g to dg Convert 733 mm to km Questions of the

Convert 52. 7 g to dg Convert 733 mm to km Questions of the Day Give 3 examples of derived units. Write out the conversion ladder. (KHDUDCM)

Use a variety of notations appropriately (e. g. exponential, functional, square root). Objectives Select

Use a variety of notations appropriately (e. g. exponential, functional, square root). Objectives Select and apply Make Use Select and apply an appropriate method (e. g. , mental mathematics, paper and pencil, or technology) for computing with real numbers, and evaluate the reasonableness of results. Make decisions about units, scales, and measurement tools that are appropriate for problem situations involving measurement. Use concepts of length, area, and volume to estimate and solve real-world problems.

Convert 7. 23 L to m. L Convert 3475 cg to g Questions of

Convert 7. 23 L to m. L Convert 3475 cg to g Questions of the Day Turn in work to the table by the door. What are derived units? What metric unit of measurement would you use to measure the length of a basketball court?

Dimensional Analysis (Important for BIG conversions)

Dimensional Analysis (Important for BIG conversions)

 • King Henry Doesn’t Usually Drink Chocolate Milk • k – h –

• King Henry Doesn’t Usually Drink Chocolate Milk • k – h – da – UNIT – d – c – m

Dimensional Analysis (Important for BIG conversions) • Converting 10 m/s to km/hr

Dimensional Analysis (Important for BIG conversions) • Converting 10 m/s to km/hr

Convert 5. 31 c. L to L Convert 7642 g to mg Questions of

Convert 5. 31 c. L to L Convert 7642 g to mg Questions of the Day QUIZ at the end of class! What is dimensional analysis? Why is it important we use dimensional analysis? How is it useful?

Significant Figures

Significant Figures