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METRIC SYSTEM

Learn about the importance of the Metric System in measuring length, weight, and volume with examples and practical applications.

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METRIC SYSTEM

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  1. METRIC SYSTEM Mr D’s 6th Grade Class

  2. Why do we need to know the Metric System

  3. METER(s) LITER(s) GRAM(s) CELCIUS

  4. Metric System • Base Units • Gram(s)(g) • Root or base unit of measurement for weight and or mass of an object • Weight is how much an object is affected by gravity • Mass is how much space an object occupies

  5. Metric System • Base Units • Meter(s)(m) • Root or base unit of measurement for length • How high, tall, width, length of an object

  6. Metric System • Base Units • Liter(s)(l,L) • Root or base unit of measurement for volume • Volume is the measurement of the capacity or how much something will hold

  7. Acronym King = kilo (k) 1000 Harry = hecto (h) 100 Didn’t know = deka (dk) 10 But = Base Units meter, liter, gram Dopey = deci (d) .1 Carl = centi (c) .01 Might = milli (m) .001

  8. 1 mile 1.6 kilometers 1 yard = 0.9444 meters 1 inch = 2.54 centimeters English vs. Metric Units Which is longer? A. 1 mile or 1 kilometer B. 1 yard or 1 meter C. 1 inch or 1 centimeter Left Image: http://webapps.lsa.umich.edu/physics/demolab/controls/imagedemosm.aspx?picid=1167Right Image: http://share.lancealan.com/N800%20ruler.jpg

  9. A. 1 meter or 105 centimeters B. 4 kilometers or 4400 meters C. 12 centimeters or 102 millimeters D. 1200 millimeters or 1 meter km Metric Units m cm mm The basic unit of length in the metric system in the meter and is represented by a lowercase m. Standard: The distance traveled by light in absolute vacuum in 1⁄299,792,458 of a second. Metric Units 1 Kilometer (km) = 1000 meters 1 Meter = 100 Centimeters (cm) 1 Meter = 1000 Millimeters (mm) Click the image to watch a short video about the meter. Which is larger?

  10. 1 centimeter = 10 millimeters 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. Measuring Length How many millimeters are in 1 centimeter? 1 10 2.8 Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg

  11. 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. Measuring Volume We will be using graduated cylinders to find the volume of liquids and other objects. Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water. What is the volume of water in the cylinder? _____mL 43 Top Image: http://www.tea.state.tx.us/student.assessment/resources/online/2006/grade8/science/images/20graphicaa.gifBottom Image: http://morrisonlabs.com/meniscus.htm

  12. 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 C A B =23ml =37ml =52ml Pay attention to the scales for each cylinder.

  13. 9 cm 8 cm 10 cm We can measure the volume of irregular object using water displacement. Amount of H2O with object = ______About of H2O without object = ______Difference = Volume = ______ http://resources.edb.gov.hk/~s1sci/R_S1Science/sp/en/syllabus/unit14/new/testingmain1.htm Measuring Solid Volume We can measure the volume of regular object using the formula length x width x height. 8 cm 720 cm3 or ml 9 cm _____ X _____ X _____ = _____ 10 cm 260 ml 200 ml 60 ml or cm3 Click here for an online activity about volume. Choose Lessons  Volume & Displacement

  14. kL Metric Units cL mL L Volume is the amount of space an object takes up. The base unit of volume in the metric system in the liter and is represented by L or l. Standard: 1 liter is equal to one cubic decimeter Metric Units 1 liter (L) = 1000 milliliters (mL) 1 milliliter (mL) = 1 cm3 (or cc) = 1 gram* Which is larger? Click the image to watch a short video about volume. A. 1 liter or 1500 milliliters B. 200 milliliters or 1.2 liters C. 12 cm3 or 1.2 milliliters* * When referring to waterLiter Image: http://www.dmturner.org/Teacher/Pictures/liter.gif

  15. 1 pound = 453.6 grams 1 ounce of gold = 28,349.5 milligrams 100 kilogram = 220 pounds English vs. Metric Units Which is larger? 1. 1 Pound or 100 Grams 2. 1 Kilogram or 1 Pound 3. 1 Ounce or 1000 Milligrams

  16. Kilogram Prototype A. 1 kilogram or 1500 grams B. 1200 milligrams or 1 gram C. 12 milligrams or 12 kilograms D. 4 kilograms or 4500 grams kg Metric Units cg mg g Mass refers to the amount of matter in an object. The base unit of mass in the metric system in the kilogram and is represented by kg. Standard: 1 kilogram is equal to the mass of the International Prototype Kilogram (IPK), a platinum-iridium cylinder kept by the BIPM at Sèvres, France. Metric Units 1 Kilogram (km) = 1000 Grams (g) 1 Gram (g) = 1000 Milligrams (mg) Click the image to watch a short video about mass. Which is larger? Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram

  17. Once you have balanced the scale, you add up the amounts on each beam to find the total mass. What would be the mass of the object measured in the picture? _______ + ______ + _______ = ________ g Measuring Mass We will be using triple-beam balances to find the mass of various objects. The objects are placed on the scale and then you move the weights on the beams until you get the lines on the right-side of the scale to match up. 300g 70g 3.4g 373.4 Graduated Cylinder Top Image: http://www.southwestscales.com/Ohaus_Triple_Beam_750-SO.jpgBottom Image: http://www.regentsprep.org/Regents/biology/units/laboratory/graphics/triplebeambalance.jpg

  18. 1st – Place the film canister on the scale. 2nd – Slide the large weight to the right until the arm drops below the line. Move the rider back one groove. Make sure it “locks” into place. 3rd – Repeat this process with the top weight. When the arm moves below the line, back it up one groove. 4th – Slide the small weight on the front beam until the lines match up. Measuring Mass – Triple-Beam Balance 5th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram. Triple Beam Balance Tutorial

  19. 1 fl oz = 29.573 ml 1 12-oz can of soda would equal approximately 355 ml. 1 quart = 0.946 liters 1 gallon = 3.79 liters It would take approximately 3 ¾ liters to equal a 1 gallon. English vs. Metric Units Which is larger? A. 1 liter or 1 gallon B. 1 liter or 1 quart C. 1 milliliter or 1 fluid ounce

  20. Length • The standard unit for length, width, distance, thickness in metric system is the meter. • Other units of length and their equivalents in meters are as follows: • 1 millimeter (mm) = .001 meter (m) • 1 centimeter (cm) = .01 meter (m) • 1 decimeter (dm) = .1 meter (m) • 1 meter (m) = 1 meter (m) • 1 kilometer (km) = 1000 meters (m)

  21. Estimation: for reference • 1 meter is a little longer than a yard or 3ft • 1 centimeter is nearly the diameter of a dime • 1 millimeter is about the thickness of a dime • A typical doorknob is usually 1 m high • Diameter of a CD or DVD is 12 cm

  22. Volume • The standard unit of volume in the metric system is the liter. • 1 milliliter (ml) = .001 liters (l) • 1 centiliter (cl) = .01 liter • 1 deciliter (dl) = .1 liter • 1 liter (l) = 1 liter • 1 kiloliter (kl) = 1000 liters • 1 milliliter (ml) = 1 cm3 • 2000 cm3 = 2 liters

  23. Mass (weight); ‘What’s the difference?” • The standard unit of mass in the metric system is the gram. • Other units of mass and their equivalents in grams are as follows: • 1 milligram (mg) = 0.001 gram (g) • 1 centigram (cg) = 0.01 gram (g) • 1 decigram (dg) = 0.1 gram (g) • 1 gram (g) = 1 gram (g) • 1 kilogram (kg) = 1000 grams (g)

  24. Estimation: for reference • 1 gram is about the mass of a paper clip • 1 kilogram is about the mass of a liter of water • US Nickel weighs approximately 5 grams • penny weights 2.5 grams

  25. Temperature • Temperature is expressed in degrees Celsius in the metric system Estimation: for reference • Boiling point of water (at sea level) is 100oC • Freezing point of water (at sea level) is 0oC • A hot day is about 30oC which is equivalent to 86o F

  26. Let’s Check What you Know!

  27. Meter (m) Liter (l) Gram (g) Celsius (oC)

  28. Metric Measurements Review • Measurements

  29. Acronym King = kilo (__) 1000 Harry = hecto (__) 100 Didn’t know = deka (___) 10 But = Base Units: _____(m), _____ (l), _____(g) Dopey = deci (__) .1 Carl = centi (__) .01 Might = milli (__) .001

  30. Metric Measurements Review • Measurements

  31. Check Your Knowledge 3 • Draw a line matching unit of measurement to what they measure` 1. liter mass, and weight 2 meter distance, length, thickness 3. gram temperature 4. Celsius volume, capacity 2 4 1

  32. Metric Measurements Review • Measurements

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