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How Do You Measure Up? 10/9/13 Key Question: What does Volume and Mass measure? Initial Thoughts:

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Evidence 1: Notes & Practice

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SI Measurements (also known as “metric system”) “SI” stands for “System International” or “International System of Measurement”

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What about it? –Common Language for scientists –Based on units of 10 –Multiply or divide to go up or down when converting units –Prefixes determine “how much” of a unit SI Measurements (also known as “metric system”)

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Important BASE units to remember: METERS = m (measures distance or length) ruler/meterstickMeasure with ruler/meterstick

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LITERS = L (measures volume — how much space something takes up) graduated cylinder/beakerMeasure with graduated cylinder/beaker Or with a ruler (length x height x width)Or with a ruler (length x height x width)

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g GRAMS = g (measures mass) triple beam balance/scaleMeasure with triple beam balance/scale

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o C o CELSIUS = o C (measures temperature) thermometerMeasure with thermometer

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Important PREFIXES to remember: 1000 k = kilo- (means “1000”) 100 h = hecto-(means “100”) 10 D = deca-(means “10”) BASE UNIT (liter, meter, gram) 1/10” or 0.1 d = deci-(means “1/10” or 0.1) 1/100 c = centi- (means “1/100” or.01) 1/1000 m = milli- (means “1/1000” or.001)

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Easy way to remember the order of prefixes: Kids Have Dreams But Dreams Cost Money Measurement by Brainpop

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Practice 1 meter (think meter stick) Equals 100 cm Equals 1000mm Challenge: How many kilometers? 1 meter Equals 1/1000 km

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Triple Beam Balance Go to my SWIFT page. Click on Links Click on Triple Beam Balance Practice

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Evidence contd. With your table partner, complete the bottom questions 1-10. Reminder: remember Participation. Everyone should be contributing.

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Evidence 2: Measurement Lab There are 8 stations. Read the instructions and record your answers in your journals. MAKE SURE TO WRITE DOWN THE NUMBER OF THE STATION

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Measuring Liquids How many ml of water is shown in the picture? Always measure from the bottom of the meniscus. Answer: 6.6 ml

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Measuring VOLUME by displacement Used to measure irregular or non- box shapes. When you can’t measure length x height x width 5.6 – 4.8 = 0.8 ml

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Measuring Mass What is the mass? Don’t forget to include units!!!

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Station #9 Use your hand measurement from the Going the Distance lesson. Convert from centimeters to: –Decimeters, meters, decameters, kilometers

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Analysis Questions 1.Name 2 different base units that could measure the amount of water a fish tank could hold. 2.Why is the number 10 important in the metric system? 3.Why would the prefix “kilo” be more useful than “tera” (1 trillion)?

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Summary

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Reflection: Come up with your own Metric Mnemonic: i.e. Kids Have Dreams But Dreams Cost Money Kilo- Hecto- Deca- (BASE) Deci- Centi- Milli- OR King Henry Doesn’t Usually Drink Chocolate Milk Kilo- Hecto- Deca- (unit) Deci- Centi- Milli-

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Big Idea What is the big Idea of metric units & conversion? Metric prefixes are multiples of 10 and can be easily converted by moving the decimal.

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Get the sheet by the door and glue it into your lab notebook. Fill in the “guess” column Today: Metric Olympics!!! Goal: To test your ability to take accurate metric measurements for length, volume and mass.

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Metric Olympics You will work with a partner Everyone must take measurements and fill out their own data sheet You must remain on task It’s important that we are respectful of other classes

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