Mrs. pickard's science website



4909185-28321000Name: ____________________ Why the Metric System?The metric system is the world standard for measurement. The metric system is the world standard for measurement. Not only do scientists throughout the world use it, but also most nations have adopted it as their standard of measurement. Measurement in SI (International System of Units) is based on powers of 10. Each unit is 10 times larger or 10 times smaller than the next unit. The diagram below shows the different SI prefixes and their meaning.7943851130300042233851206500Try these steps each and every time you want to use the metric ladder: Find the spot (unit) on the ladder that has the same prefix as the measurement you are starting with. Locate the spot on the ladder that you want to convert your number to. Count the number of steps you must move on the ladder to make your Conversion. Move the decimal in your original number (the same number of steps) and in the same direction (don't forget the Base step).EXAMPLE:How many millimeters are there in 250 centimeters?Step 1: What is your starting unit? _________________Step 2: What is your ending unit? ___________________Step 3: Count the number of steps you will move from one unit to the other. _________ Which direction did you move? _______________Step 4: Move the decimal point in 250 cm to the correct number of places.250 cm = _________ mm13658855969000Let’s PracticeWrite the unit in the blank next to the property of matter it describes._________ a. Amount of hydrochloric acid in a graduated cylinder_________ b. Amount of mass in a salt sample_________ c. Length of a copper wire 2. Write the correct abbreviation for each metric unit.1) Kilogram _____ 4) Milliliter _____ 7) Kilometer _____2) Meter _____ 5) Millimeter _____ 8) Centimeter _____ 3) Gram _____ 6) Liter _____9) Milligram _____Arrange each group of units from smallest to largest.a. km, mm, cm, m ______________________ b. mg, kg, g _____________________c. l, mL _____________________ 3. Which is larger? Circle your choice for each one. a. 1 kilogram or 1500 grams c. 12 milligrams or 12 kilograms b. 1 liter or 1500 milliliters d. 200 milliliters or 1.2 liters4. Convert the following:155 cm = ___________m d. 12 mg = ___________cg b. 3500 mL = ___________ L e. 1000mm = __________ m c. 104 km = ___________m f. 198 g = __________ kg A little challenge One cereal bar has a mass of 37 g. What is the mass of 6 cereal bars? Is that more than or less than 1 kg? Explain your answer. (Hint: 1 kg = _______g)-57721512382500 Dr. O is playing in her garden again She needs 1 kg of potting soil for her plants. She has 750 g. How much more does she need? Explain your answer.-23431514033500 Weather satellites orbit Earth at an altitude of 1,400,000 meters. What is this altitude in kilometers?A dollar bill is 15.6 cm long. If 200 dollar bills were laid end to end, how many meters long would the line be? . ................
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