The Measurement of Science

Why do we use the Metric System and SI Most of the world uses it!!! IT’S ________________________ Metric System- system of measurement based on the number ________ SI (System international)- adaptation of the metric system regulated by International Bureau of Weights and Measures.

What does it measure? Length (how long) The ____________ is the basic unit A little longer than a yard Meterstick, ruler Mass (how much stuff its made of) A paper clip is about 2 grams scale Volume (how much space it takes) The ________________ is the basic unit One liter bottle vs 2 liter bottle Graduated cylinder, beaker

Making a good measurement Parallex Error The error caused by reading measurements from ______________. Example- reading a speedometer from the passengers side.

Using a ruler There are ________ millimeters in every centimeter We can write millimeters as tenths of a centimeter Milimeter Centimeter

Using a Graduated Cylinder Measure to the bottom of the curve (_______________) You should be at eye level with the liquid How much is each space worth? Value of the Difference between the numbers Space = number of spaces

SI Prefixes Prefixes are are used to change units by a factor of __________ Kilo = ____ abbreviation - K Hecto = 100 abbreviation - H Deka = 10 abbreviation - da Deci = 0.1 abbreviation - d _____ = 0.01 abbreviation - c mili = 0.001 abbreviation - m Example: if you travel 2 kilometers you have traveled ___________ meters! Kilo stands for __________

How do we convert from one measurement to another? How do I remember that? K H D U D C M

TRY THIS USING THE STAIRCASE METHOD 1000 mg = ______ g Step 1: Determine if you are going to go up or down the ladder. Step 2: Determine how many steps there are from milligrams to grams. Step 3: Move the decimal point the amount of places that was determined in steps 1 & 2.

TRY THIS USING THE STAIRCASE METHOD 0.15 L = __________ ml 25.6 cm= __________ m 150,000 mg=_________ kg