Transcript Slide 1
MEASUREMENT 21 July 2015 Bell Work 8/16 What do tool could you use to measure distance travelled? International System of Measurement is accepted as the standard for _________________ throughout the most of the world. In the United States we use the ______________ _______________ as our system of measurement. Scientists around the world use the _______________ _______________ of Units, or SI, because SI uses certain metric units that are based on units of _________. ______________ are used with units to change their names to larger or smaller units. Base units used in SI are the meter, __________, gram, and _____________. Base Units Base Unit Measurement Meter _________________ Volume of a liquid _________________ (volume of a solid is unit3) _______________ Mass Second _______________ Each measurement is measured by a different ___________. Measurement Tool Unit Length/Distance Ruler/meter stick _____________ _____________ Triple beam balance _____________ Weight ______________ Newton Volume Liquid: ______________ Solid: _____________ Liquid: ______________ Solid: ______________ ______________ thermometer ______________ Time ______________ ______________ Prefixes are attached to ________ ________ to form larger or smaller units of measurement. Prefixes Pre-fix Definition (value) of Pre-fix kilo ____ ______________ _________ one hundred deka _________________ ______________ meter, gram, liter, second ___________ centi milli one tenth one hundredth ____ ______________ A ______________ is used to represent each ______________ and base unit. Symbols Unit _________ hecto Deka _________ meter liter _________ deci _________ _________ Symbol k ______ da g ______ ______ s d c m NOTE: The base unit must be the ________________. (Example: you _____________ convert 1 meter to 100 kilograms) Practice Examples- Convert the following (remember kilo means 1000): 1) 1km = ___________ meters? (larger to smaller) Answer: 1km x 1000 = _______ m 2) 10 g = ___________ kg? (smaller to larger) Answer: 10g divided by 1000 = __________kg king henry Died by drinking chocolate milk Acronym for pre-fixes: Stair Step Method A short cut that may also be used is the stair step method. When converting from one unit to another: 1. 2. 3. Move the decimal ________ space for ___________ step taken on the stair case. Move the decimal to the ___________ if you go ________ the stair case. Move the decimal to the ___________ if you go ________ the stair case. Example- Convert the following: 1) 10 hm= ____________ dm? Moving from the h-step to the d-step requires three steps to the right on the staircase. Therefore, move the decimal three places to the right. Answer: 10 hm = ____________ dm Example- Convert the following: 2) 5 cL= ____________ dL? Moving from the c-step to the d-step requires one step to the left on the staircase. Therefore, move the decimal one place to the left. Answer: 5 cL = ____________ dL