Chapter 8 Factor – Label Method Part 1. 24 in. = ___ ft.

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Presentation transcript:

Chapter 8 Factor – Label Method Part 1

24 in. = ___ ft.

You have just used a conversion factor.

Conversion Factor A relationship between two units expressed in fractional form

Conversion Factors A conversion factor is a ratio: 12 inches or 1 foot 1 foot 12 inches

Factor Label Method Method of converting from one unit to another using conversion factors

24 in. = ___ ft. We can solve this problem using factor label method.

PrefixSymbolValuePowerUse GigaG 1,000,000, Gigabyte MegaM1,000, Megawatt kilok1, kilometer decid decigram centic centimeter millim milliliter micro  microsecond nanon nanometer Prefixes in the Metric System

An Example of a Metric Conversion Factor 1000 m = 1 kmThis can be written as the factors...

An Example Problem … Convert cm to meters using the Factor Label Method.

Convert cm to meters 10.83cm

Convert cm to meters 10.83cm cm

Convert cm to meters 10.83cm cm m

Convert cm to meters 10.83cm cm m0.01

Convert cm to meters 10.83cm cm m0.01 = m

Convert 152dg to mg 152dg

Convert 152dg to mg 152dg dg

Convert 152dg to mg 152dg dg g

Convert 152dg to mg 152dg dg 0.1g

Convert 152dg to mg 152dg dg 0.1g

Convert 152dg to mg 152dg dg 0.1g g

Convert 152dg to mg 152dg dg 0.1g g mg

Convert 152dg to mg 152dg dg 0.1g g mg 0.001

Convert 152dg to mg 152dg dg 0.1g g mg = 15,200mg

Convert 6896s to weeks 6896s

Convert 6896s to weeks 6896s 60s min

Convert 6896s to weeks 6896s 60s min 60min hr

Convert 6896s to weeks 6896s 60s min 60min hr 24hr day

Convert 6896s to weeks 6896s 60s min 60min hr 24hr day 7 days week

Convert 6896s to weeks 6896s 60s min 60min hr 24hr day 7 days week = weeks

Convert mg/hr to cg/year

150.0mg hr

Convert mg/hr to cg/year 150.0mg hr 0.001g mg

Convert mg/hr to cg/year 150.0mg hr 0.001g mg0.01g cg

Convert mg/hr to cg/year 150.0mg hr 0.001g mg0.01g cg24 hr day

Convert mg/hr to cg/year 150.0mg hr 0.001g mg0.01g cg24 hr day 365 days year = 131,400 cg/year

How many minutes does it take light to reach us from the sun which is 93,000,000 miles distant. The following information will be useful: –speed of light = 3.0 x 10 8 m/s –1km = mi