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Published byXavier Moreno Modified over 4 years ago

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**T G M k base m µ n p f C What this chart means: For big things:**

Terra Giga Mega kilo milli micro nano pico fempto T G M k base m µ n p f 1012 109 106 103 10-3 10-6 10-9 10-12 10-15 centi C 10-2 What this chart means: For big things: 1 Terrameter = 1012 Meters OR Terrameters = 1meter For little things: 1 micrometer = 10-6 Meters OR micrometers = 1meter

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Making conversions Step 1: Write down a conversion factor between the two types of things you are comparing. If you don’t know it, look it up. Step 2: Use “railroad tracks” or “factor-label” method to set up conversion formula. If you need to make multiple conversions, set each one up one at a time. Step 3: Multiply across the top, multiply across the bottom, divide top by bottom. Answer. Include your final units.

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**Practice 240 Mm = __________ m 736 nm = ___________ m 1 Mm = 106 m**

Ans: 7.36 x 10-7 m

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**More practice 6.42 m = ___________ km 42 m = ___________ µm**

Ans: 6.42 x 103 km Ans: 4.2 x 107 µm

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**Still more practice (the “hard” ones)**

12.3 Gm = _____________ pm 60,000 fm = _____________ km 1 Gm = 109 m 1 m = 1012 pm 1 fm = m 1000 m = 1 km Ans: 6 x km

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**Weird, multi-dimensional conversions**

PreAP packet number 8 on dim. analysis wrksht. 12 mi/hr*s = ___________ m/s2 1 mile = 1609 meters 1 hr = 3600 seconds

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**PreAP Students: If you don’t know the conversion factor look it up:**

In a book On the internet (wikipedia is good) On a website: “MultiConvert” app for smartphone If you use the website or the app: don’t cheat. Don’t go straight to the result, even if you can. This does you no good on your upcoming test. Just use it to find the conversion factors. You could also use it to check your work

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Using the Factor Label Method. 34,000,000 = 7.29 x 10 5 = 0.3254 = 5.6 x 10 -3 = 3.4 x 10 7 729,000 3.254 x 10 -1 0.005600.

Using the Factor Label Method. 34,000,000 = 7.29 x 10 5 = 0.3254 = 5.6 x 10 -3 = 3.4 x 10 7 729,000 3.254 x 10 -1 0.005600.

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