Blog #2; Unit conversions!

Unit Conversions

Unit conversions is the  conversion factors of different units of measurement that have the same quantity.


In class today we've learned how to convert from tera -> pico. (refer to the chart above)


Quantities


The basics of measurements of which we're doing now consists of the number and the unit combined which creates the quantity.


SI Units


SI units is a french system that uses powers of ten. This is the international system.


Derived Quantities


A derived quantity is when there is more than one SI unit base unit in one single quantity. 


eg; 
14km into m. 

14km  X  1km/1o^3m  =  14,000 m

Use the "magic one"
-simply put a "1" beside the largest quantity, and the conversion factor beside the smaller one
-make sure that your units cancel, and voila!

eg.
27km into mm.

27km  X  1km/10^3m  X  1m/10^3 = 27 X 10^-6 = 2.7 X 10^-5

-if you have to do multiple conversions, always go to the conversion equal to 10^0
eg. k, g, s, etc.