1 / 27

MEASUREMENT

There is no such thing as not being “GOOD” at something, it’s all in your willingness to meet the challenge and not give up. MEASUREMENT. V. Units of Measurement VI. Metric System. A. Number vs. Quantity. Quantity - number + unit. UNITS MATTER!!. B. SI Units. Quantity. Symbol. Base Unit.

calliope-petros
Download Presentation

MEASUREMENT

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. There is no such thing as not being “GOOD” at something, it’s all in your willingness to meet the challenge and not give up.

  2. MEASUREMENT V. Units of Measurement VI. Metric System

  3. A. Number vs. Quantity • Quantity - number + unit UNITS MATTER!!

  4. B. SI Units Quantity Symbol Base Unit Abbrev. Length l meter m Mass m kilogram kg Time t second s Temp T kelvin K Amount n mole mol

  5. C. Metric Prefixes

  6. kilo- mega- M k 1x106 1x103 deci- BASE UNIT --- d 1x10-1 centi- c 1x10-2 milli- m 1x10-3 micro-  1x10-6 nano- n 1x10-9 C. Metric Prefixes Symbol Prefix Factor

  7. D. SI Prefix Conversions • 457 dm = km • 457 dm = mm

  8. D. SI Prefix Conversions 0.2 1) 20 cm = ______________ m 2) 0.032 L = ______________ mL 3) 45 km = ______________ dm 4) 805 cm = ______________ km 32 450,000 0.00805

  9. MEASUREMENT VII. Dimensional Analysis

  10. TO KNOW You will be using these converstions throughout the year, so its best to take the time to memorize them now. 1.00 in = 2.54 cm 2.2 lbs = 1.00 kg 1.1 qts = 1.00 L metric from earlier table

  11. B. Dimensional Analysis • Steps: 1. Identify starting & ending units. 2. Line up conversion factors so units cancel. 3. Multiply all top numbers & divide by each bottom number hit enter. 4. Check units & answer.

  12. B. Dimensional Analysis • In algebra ab What do we do? b • In science called factor-label method • Units, or “labels” are canceled, or “factored” out

  13. B. Dimensional Analysis Your European hairdresser wants to cut your hair 8.0 cm shorter. How many inches will he be cutting off?

  14. B. Dimensional Analysis Your European hairdresser wants to cut your hair 8.0 cm shorter. How many inches will he be cutting off? 8.0 cm 1 in 2.54 cm = 3.2 in

  15. B. Dimensional Analysis How many milliliters are in 1.00 quart of milk?

  16. qt mL B. Dimensional Analysis • How many milliliters are in 1.00 quart of milk? 1 L 1.057 qt 1000 mL 1 L 1.00 qt = 946 mL

  17. B. Dimensional Analysis Eastview football needs 550 cm for a 1st down. How many yards is this?

  18. cm yd B. Dimensional Analysis Eastview football needs 550 cm for a 1st down. How many yards is this? 1 ft 12 in 1 yd 3 ft 1 in 2.54 cm 550 cm = 6.0 yd

  19. B. Dimensional Analysis A piece of wire is 1.3 m long. How many 1.5-cm pieces can be cut from this wire?

  20. m pieces B. Dimensional Analysis A piece of wire is 1.3 m long. How many 1.5-cm pieces can be cut from this wire? 1 piece 1.5 cm 100 cm 1 m 1.3 m = 86 pieces

  21. B. Dimensional Analysis • You have 1.5 pounds of gold. Find its volume in cm3 if the density of gold is 19.3 g/cm3.

  22. lb cm3 B. Dimensional Analysis • You have 1.5 pounds of gold. Find its volume in cm3 if the density of gold is 19.3 g/cm3. 1 cm3 19.3 g 1 kg 2.2 lb 1000 g 1 kg 1.5 lb = 35 cm3

  23. REAL LIFE!!!! A favorite item at the fair is bacon on a stick. If each stick holds approximately 0.15kg of bacon and the booth serves an average of 45 people an hour, how many pounds of bacon are consumed in the 12 days of the fair? (The gates open at 6:00am and close at midnight.)

  24. Square/Cubic Units • Use the conversion factors you already know, but when you square or cube the unit, don’t forget to cube the number also! • Best way: Square or cube the ENITRE conversion factor • Example: Convert 4.3 cm3 to mm3 4.3 cm3 (10 mm) 3 (1 cm) 3 4.3 cm3 103 mm3 13 cm3 = = 4300 mm3

  25. Volumes 1000 cm3 (1 dm)3 (10 cm)3 = 1 dm3 So, a dm3 is the same as a Liter ! A cm3 is the same as a milliliter.

  26. Volumes • How many liters of water would fill a container that measures 75.0 in3?

  27. in3 L Volumes • How many liters of water would fill a container that measures 75.0 in3? 1 L 1000 cm3 (2.54 cm)3 (1 in)3 75.0 in3 = 1.23 L

More Related