Write whether each measurement is Metric, English, Both, or Fake meter pint ton Newton Einstein second inch watt pound Fahrenheit Kelvin miles/hour kilometers/hour liter quart hertz

Bellwork: 1. Get out your Science Fair topic and write your name in it so it is ready to pass in. 2. Get out your Journal entry so it is ready to check off. 3. Write the objectives on the bottom of your journal entry 4. On a scale of 1 to 5, how confident are you with using the Metric System?

The Metric System Take out a sheet of paper and pen or pencil. Title your paper “Metric System Notes” Copy only the portion of the powerpoint that is written in red.

What is the Metric System? The metric system is a system of measurement which was developed over many years, and traces its origin to a 1585 book entitled "The Tenth", by Simon Stevin, who suggested that a decimal system be used for weights and measures.

The Metric System Metric System is a common language of measurement in science used all over the world.

The Metric System The metric system is the preferred system of weights and measures for United States trade and commerce, and many business and technology companies in the USA use the metric system, and many products specify both . But most people have decided that the inconvenience of switching outweighs the benefits.

The Metric System Map of Nations that don't use The Metric System All countries colored in red choose not to use the metric system as their system of weights and measurements. Myanmar (Burma) Liberia The United States

The Metric System The Metric System is … - based on 10 - based on only three units of measure: the meter, liter, and gram

Comparing Units English Standard vs. Metric system T. Trimpe 2008 http://sciencespot.net/

English vs. Metric Units: Length Which is longer? A. 1 mile or 1 kilometer B. 1 yard or 1 meter C. 1 inch or 1 centimeter 1.6 kilometers 1 mile 1 yard = 0.9444 meters 1 inch = 2.54 centimeters Left Image: http://webapps.lsa.umich.edu/physics/demolab/controls/imagedemosm.aspx?picid=1167 Right Image: http://share.lancealan.com/N800%20ruler.jpg

English vs. Metric Units: Weight 1 pound = 453.6 grams Which is larger? 1. 1 Pound or 100 Grams 2. 1 Kilogram or 1 Pound 3. 1 Ounce or 1000 Milligrams 100 kilogram = 220 pounds 1 ounce of gold = 28,349.5 milligrams

English vs. Metric Units: Volume Which is larger? A. 1 liter or 1 gallon B. 1 liter or 1 quart C. 1 milliliter or 1 fluid ounce 1 fl oz = 29.573 ml 1 12-oz can of soda would equal approximately 355 ml. 1 gallon = 3.79 liters It would take approximately 3 ¾ 1-liter bottles to equal a gallon. 1 quart = 0.946 liters

The Metric System Meter (m) – measures distance (instead of inch, foot, yard, or mile) Liter (L) – measures volume of liquids (instead of ounce, cup, pint, quart, & gallon) Volume measures how much space something takes up Gram (g)- measures mass/weight (instead of ounces, pounds, and tons) Measures how heavy something is.

The Metric System Prefixes are added onto a base unit to make it bigger or smaller Milli- smaller by a 1000 Centi- smaller by a 100 Kilo- bigger by 1000 The Prefixes are the same for liters, grams, and meters. Millimeter-smaller than a meter by a 1000 Milligram- smaller than a gram by a 1000 Milliliter- smaller than a liter by a 1000

The Metric System is based on 10! KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit CENTI 0.01 Unit MILLI 0.001 Unit Meters Liters Grams

Abbreviating the metric system units Metric base units are abbreviated with one letter: g for Gram m for Meter L for Liter Metric prefixes are abbreviated with one letter: m for milli c for centi k for kilo For example, Kilogram: k for kilo + g for gram = kg Try Millimeter: Try Liter:

T. Trimpe 2008 http://sciencespot.net/ Metric Tools!!! T. Trimpe 2008 http://sciencespot.net/

Measuring Length– We use a meter stick 1 centimeter = 10 millimeters How many millimeters are in 1 centimeter? What is the length of the line in centimeters? _______cm What is the length of the line in millimeters? _______mm What is the length of the line to the nearest centimeter? ________cm HINT: Round to the nearest centimeter – no decimals. Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg

Measuring Mass- We use a digital scale or balance Find the mass by weighing the object on the digital scale. Or, find the mass by using the balance.

Using a balance Place the object in one tray. Add the heaviest weight in the other. If it tips, add the next heaviest weight. Continue adding weights until the scale balances. Add all the weights up. The total is the weight of the object.

Measuring Volume- units are mL We use graduated cylinders to find the volume of liquids and other objects. Measure from the bottom of the meniscus (the curve). When using a real cylinder, make sure you are eye-level with the meniscus What is the volume of water in the cylinder? _____mL What causes the meniscus? A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides. Top Image: http://www.tea.state.tx.us/student.assessment/resources/online/2006/grade8/science/images/20graphicaa.gif Bottom Image: http://morrisonlabs.com/meniscus.htm

Measuring Liquid Volume What is the volume of water in each cylinder? Images created at http://www.standards.dfes.gov.uk/primaryframework/downloads/SWF/measuring_cylinder.swf A B C Pay attention to the scales for each cylinder.

Measuring Solid Volume- Units are cm3 We measure the volume of regular object using the formula length x width x height using a ruler. _____ X _____ X _____ = _____ http://resources.edb.gov.hk/~s1sci/R_S1Science/sp/en/syllabus/unit14/new/testingmain1.htm We measure the volume of irregular object using water displacement, using a graduated cylinder. Amount of H2O with object = ______ About of H2O without object = ______ Difference = Volume = ______ Click here for an online activity about volume. Choose Lessons  Volume & Displacement

Metric Conversions Ladder Method T. Trimpe 2008 http://sciencespot.net/

How many jumps does it take? Ladder Method 1 2 3 KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit Meters Liters Grams CENTI 0.01 Unit MILLI 0.001 Unit How do you use the “ladder” method? 1st – Determine your starting and ending point. 2nd – Count the “jumps” to your ending point. 3rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m Starting Point Ending Point How many jumps does it take? 4. 1 __. 2 __. 3 __. = 4000 m

Conversion Practice Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm 14 km = _______ m 109 g = _______ kg 250 m = _______ km Compare using <, >, or =. 56 cm 6 m 7 g 698 mg

Interesting fact about the Metric system 1 mL of water weighs 1 gram. The Formula for Density is Mass Volume

The Metric System The US Congress amended the Metric Conversion Act of 1975 and designated the metric system as the preferred system of weights and measures for United States trade and commerce.