CONVERSIONS

Learning Targets 8 I am able to identify SI and their prefixes. 9 I am able to use a dimensional analysis grid to convert numbers in the SI system of units.

Conversion Factors Set-up as a fraction Always the number 1 in either the numerator or denominator Top and bottom are equal Whole fraction equals 1 Anything multiplied or divided by 1 does not change the value

Conversion Factors with Metric Units 1 kg __ cm 1 L __ dm __g 1 m __ mL 1 m 100 cm 10 dm 1,000 g 1,000 mL *Multiplying gives bigger number but smaller unit *Dividing gives smaller number, but bigger unit

Use Conversion Factors 1.85 m  cm 1.85 m x 100 cm = 1 1 m 185 cm Conversion Factor

Dimensional Analysis Grid 1.85 m  cm 1.85 m 100 cm = 1 m 185 cm x Conversion Factor

Dimensional Analysis Grid 1.85 m  cm 1.85 m = 100 cm 185 cm 1 m Conversion Factor

Try this….. The height of a building is 553m tall. How many kilometers is that? 1 553 m km = 0.553 km 1000 m

Try this… The mass of an object is 35 kg. What is the object’s mass in grams? 35 kg 1,ooo g = 35,000 g 1 kg Answer: 35,000 grams

Try this… Your next class is 0.0748 kilometers away. How many meters will you need to walk to get there? 0.0748 km 1,ooo m = 74.8 m 1 km Answer: 74.8 meters

More Practice

Use Pit Stops when needed… 1.85 km  cm 1.85 km 1000 m 100 cm = 185,000 cm 1 km 1 m Conversion Factor Conversion Factor

Try This… Convert 51.3 kg to hectograms. 51.3 kg 1000 g 1 hg = 513 hg 1 kg 100 g Answer: 513 hectograms

Try this… Convert 97,000 centimeters into kilometers. 97,000 cm 1 m 1 km = 0.97 km 100 cm 1000 m Answer: 0.97 kilometer

Try this……CHALLENGE!! Convert 186 days into seconds 60 min. 186 days 24 hrs. 60 s = 16,070,400 seconds 1 min. 1 days 1 hr.

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