First in order to view this presentation properly you must select Slide Show then choose From Beginning Use the arrow keys to change slides Next as you go through the presentation take notes on metric measurement DO NOT WRITE EVERYTHING Read the information ID: 1007401
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1. Metric System NotesDirections First, in order to view this presentation properly you must select "Slide Show” then choose “From Beginning”. Use the arrow keys to change slides. Next, as you go through the presentation take notes on metric measurement. DO NOT WRITE EVERYTHING. Read the information carefully, then write a summary of the important information on that page (usually only one or two sentences). Page titles are underlined . They tell you what you are learning about, so those should be the subtitles within your notes.To help you, important information is in bold. Not all pages will require note taking.Be sure to read each page carefully!
2. Title of your notes:Using the Metric SystemToolsUnitsSymbolsPrefixesConverting Within the Metric SystemKilometermilliliterkilogramgrammeterliterCelsius
3. Scientists around the world use the International System of Measurements, (SI) or Metrics, to measure distances, volumes, masses, and temperatures.In fact, most countries use the metric system of measurement.Metric SystemThe countries in red are NOT using the metric system as a standard measurement system.
4. If you travel to France (or just about any other country in the world), the distances and speeds marked on the road signs will be in kilometers, not in miles.You would buy milk measured in litersMetric System
5. You may be used to buying water and soda in liters, so you are already using the metric system!Metric System1Liter2Liters
6. Metric SystemWhy do we have the metric system?Scientists and builders around the world need to be able to share information.
7. The metric system is based on the number 10. It is easy to use because each measurement can be converted by simply multiplying or dividing by a factor of 10.Metric System10
8. Metric System Symbols for Base UnitsMeasurement Unit SymbolLengthmetermMassgramgVolumeliterLTemperatureKelvin (or Celsius)K (C)Look at the chart below to see the basic metric units and their symbols. Base units are what all measurements are based around.
9. Prefixes are used with the base unit of measurement and indicate which multiple of 10 is being used. For example one dekameter is ten meters; two dekameters would be what??? Metric System Prefixes 1 – base unit (no prefix) 10 – Deka- 100 – Hecta-1000 - Kilo1/100 – Centi1/1000 - MilliMeter (length)Liter (liquids), andGram (mass) are all base units.Measuring in units smaller than the base unit are a fraction of the base unit. Examples are Centimeter – can you tell by the fraction shown next to the prefix how many Centimeters there are in a meter???
10. Here are some commonly used prefixes in the metric system. Notice the multiplying factors are all based on the number 10.There are 1000 meters in a kilometer.A centimeter is 0.01 of a meter meaning there are 100 centimeters in one meter.Metric SystemPrefixSymbolMultiplying FactorMegaM1,000,000Kilok1000Hectah100Dekada10Decid0.1Centic0.01Millim0.001Microu0.000001Nanon0.000000001
11. Use a metric ruler or a meter stick to measure length in the Metric System.Metric System – Length
12. Metric System Length The basic unit of length is meter (m). A meter is about the length of a yard in the English system.The length of a room or the length of a large animal would be measured in meters.A centimeter (cm) is one-hundredth (1/100) of a meter. 1m = 100cmThe length of your finger or your silverware would be measured in cm.
13. Use a balance or scale to measure mass in the Metric System.Metric System - MassAlways make sure your scale or balance is on zero before measuring.To use a balance, objects are placed on the tray and then you move the riders on the beams until you get the lines on the right-side of the scale to match up (the pointer & the zero mark).To use a scale, just put the object on the tray and read the screen.
14. Metric System - MassThe basic unit of mass is kilogram. A kilogram is about 2.2 pounds.The mass of one of your large textbooks may be about 1 kilogram.A gram is one-thousandth of a kilogram. 1 kg = 1000 gPencils, candies, and cereal can be measured in grams.354.6 grams
15. Use a graduated cylinder to measure volume in the Metric System.Make sure you are looking at it eye level AND reading the bottom of the meniscus (curve in the liquid). This is 79 mL… NOT 80 mL !!!!Metric System – Volume of Liquids
16. Metric System – Volume of LiquidsThe basic unit of volume is the Liter. A liter is about 1/4 of a gallon.The volume of a large bottle of soda is 2 liters.A milliliter is one-thousandth (1/1000) of a liter1 L = 1000 mLA bottle of drinking water, a jar of spaghetti sauce, or medecine can be measured in milliliters.
17. Metric System – Volume of Regular Shapes (boxes)Use a ruler or meter stick to find the volume of a regular shaped object.
18. Metric System – Volume of Regular Shapes (boxes)To calculate the volume of a regular shape, multiply the length times the width times the height.The unit for solid volume is m3 or cm3.cmcmcmcm3
19. Metric System – Volume of Irregular Shapes Use a graduated cylinder and water displacement to determine the volume of odd shaped objects like rocks or toys.To find the volume of an odd shaped item: 1. add water to graduated cylinder2. add the object and note the new volume3. Subtract the original volume of just water
20. Metric System – Volume of Irregular ShapesThe unit for the volume for all solids is m3 or cm3.Because 1 mL = 1 cm3 it is easy to convert. The water in the diagram increased 10 mL when the rock was added.That means the rock has a volume of 10 cm3.
21. Metric System - TemperatureYou use a thermometer to measure temperature.Always check the increments on your thermometer so you know what the reading is. Wait a minute or two for the red liquid to stop moving so you get an accurate reading.
22. Metric System - TemperatureOne of two units may be used in the Metric System when measuring temperature. Kelvins are used for extreme temperatures so we will only be using Celsius in class.IMPORTANT JUST SO YOU KNOWCelsius Kelvin0˚ Celsius = freezing point of water100˚ Celsius = boiling point of water37˚ Celsius = body temperature0˚ Celsius = 273 Kelvin310˚ Kelvin = body temperature
23. Metric SystemOnce you learn how to measure in the Metric System, you will need to convert from one unit to another on occasion. For instance, you may have a balance that measures in grams, but your lab directions call for you to record the mass in kilograms. You will need to know how to convert the units.
24. An easy way to convert between the commonly used measurements is to simply move the decimal. But…How many places do you move the decimal? Which direction do you move it? Here’s an easy method to converting measurements within the Metric System which uses a mnemonics chart.Metric System - Conversions
25. Kilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Here are some prefixes and their corresponding values.Reading from left to right: each prefix is 10 times smaller than the value on its left.Reading from right to left: each prefix is 10 times larger than the value on its right.Metric System - Conversions
26. Metric System – ConversionsThe following pages are conversion practice.Only take notes you feel you need.
27. Kilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000A kilometer is 10 times longer than a Hectometer.A kilometer is 1000 times longer than a meter. 1 km = 1000 mmeterMetric System - Conversions
28. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- K H D B D C M 1000 100 10 1 1/10 1/100 1/1000A mnemonic can help you with conversions within the Metric System.Each letter of the mnemonic begins with the first letter of the metric prefix.Metric System - Conversions
29. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Memorize the mnemonic!You will always be able to rebuild this chart if you memorize the mnemonic!Metric System - Conversions
30. Metric System - ConversionsLet’s try a conversion: How many milliliters are in 1.25 Liters?OR1.25 L = ? mLSince the Metric System is based on factors of 10, we need only worry about moving the decimal when converting between metric measurements.
31. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Start with the mnemonic: King Henry Died By Drinking Chocolate Milk.Now add the prefixes that start with the first letter of the mnemonic. They will be in the correct order!Metric System - Conversions
32. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Now we are ready to make the conversion: 1.25 L = ? mL Step 1: Since Liter has no prefix, we will place our pencil on the “Base-No Prefix” spot.Step 2: Find “Milli-” on the chart.Each Prefix along the chart is a “Place” or “Spot”.Metric System - Conversions
33. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli-Step 3: Start at “Base-No Prefix” and jump your pencil to the right towards “Milli-”. You moved 3 places to the right to arrive at “Milli”.Step 4: Now move the decimal in 1.25 L to the right 3 places. This matches what you just did on the chart.Metric System - Conversions
34. 1.25 L = 1250 mL1.250Move the decimal to the right 3 places.Add a zero in the last place.You need not keep the decimal visible – it is understood to be to the right of 1250 ml.Metric System - Conversions
35. Kilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Try another conversion: 247 meters = ? kilometersFollow the previous steps:Place your pencil on “Base-No Prefix” and move to “Kilometers” by jumping 3 spaces to the left. Metric System - Conversions
36. 247 mThe decimal is understood to be to the right of ‘7’.247 m = 0.247 kmRemember: Meter – m, kilometer – km Add a zero in front of the decimal.Now move the decimal point 3 spaces to the left.Metric System - Conversions
37. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli-Convert 56.2 cm to mm.56.2 cm = 562 mmMove the decimal one place to the right.Metric System - Conversions
38. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Use the chart on your paper and try these conversions: 93.2 mL = _____ L845.34 g = _____ Kg 0.56 m = _____ cmAnswers are revealed on the next slide.Metric System - Conversions
39. King Henry Died By Drinking Chocolate MilkKilo-Hecta-Deka-Base – No prefixDeci-Centi-Milli- 1000 100 10 1 1/10 1/100 1/1000Answers:93.2 mL = 0.0932 L 845.34 g = 0.84534 Kg0.56 m = 56 cmRemember to add zeroes as placeholders where necessary.Metric System - Conversions