html5-img
1 / 14

Ch. 2 - Measurement

Ch. 2 - Measurement. III. Unit Conversions (p.39-41) SI Prefix Conversions Dimensional Analysis. To the left or right?. A. SI Prefix Conversions. 1. Find the difference between the exponents of the two prefixes. 2. Move the decimal that many places. NUMBER. =. UNIT.

blake
Télécharger la présentation

Ch. 2 - 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. Ch. 2 - Measurement III. Unit Conversions (p.39-41) SI Prefix Conversions Dimensional Analysis

  2. To the left or right? A. SI Prefix Conversions 1. Find the difference between the exponents of the two prefixes. 2. Move the decimal that many places.

  3. NUMBER = UNIT A. SI Prefix Conversions 0.532 532 m = _______ km NUMBER UNIT

  4. kilo- mega- M k 106 103 deci- d 10-1 centi- c 10-2 milli- m 10-3 micro-  10-6 nano- n 10-9 pico- p 10-12 A. SI Prefix Conversions Prefix Symbol Factor move left move right

  5. 1) 20 cm = ______________ m 2) 0.032 A = ______________ mA 3) 45 m = ______________ nm 4) 805 dm = ______________ km A. SI Prefix Conversions 0.2 32 45,000 0.0805

  6. B. Dimensional Analysis • The “Factor-Label” Method • Units, or “labels” are canceled, or “factored” out

  7. 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. 4. Check units & answer.

  8. B. Dimensional Analysis • Lining up conversion factors: = 1 1 in = 2.54 cm 2.54 cm 2.54 cm 1 = 1 in = 2.54 cm 1 in 1 in

  9. cm in  B. Dimensional Analysis • Your European hairdresser wants to cut your hair 8 cm shorter. How many inches will he be cutting off? 8 cm 1 in 2.54 cm = 3.15 in

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

  11. kg lb B. Dimensional Analysis 5) Assume your mass is 55 kg. How many pounds do you weigh? 55 kg 2.2 lb 1 kg = 121 lb

  12. km ft B. Dimensional Analysis 6) How many feet long is a 5K (5 km) race? 1 mi 1.609 km 5280 ft 1 mi 5 km = 16,408 ft

  13. lb g B. Dimensional Analysis 7) How many grams does a 10-lb. bag of potatoes weigh? 1 kg 2.2. lb 1000 g 1 kg 10 lb = 4545 g

  14. cm yd B. Dimensional Analysis 8) Taft 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 = 6.01 yd

More Related