Paulding County School District



Safety & Measurement What are 5 important rules to remember about SCIENCE LAB SAFETY? Answers may vary…some examples:1. Follow all written & verbal directions, no horseplay/running, use all materials carefully, never do anything until told2. Don’t eat or drink in the science class, don’t smell or taste lab materials, report all accidents immediately3. Never take materials out of the science class, don’t open any cabinets or prep rooms without directions from teacher4.5.Measurement (Brain Pop: Measuring Matter)MetricsTerm VolumeMassDensity Distance/LengthDefinitionAmount of space an object takes upAmount of matter in an objectA ratio that compares the mass of an object to its volume OR how tightly packed the matter is within an object.How far apart objects are or the physical length of an objectHow can we find it?L x W x H OR displacement in water:Measure the water in a graduated cylinder then drop in the object & measure again. Subtract the two amounts & you have the volume of the object.Use a scale / balance(*Don’t confuse mass with weight…that is affected by the gravitational pull on an object)Calculate Density: D= M / VDensity = Mass ÷ VolumeCar odometersMeter sticksRulersMeasuring tapesMetric Units (commonly)Liter (ml OR kl)Grams (kg OR mg)Cubic centimetercm3Meter(km OR cm OR mm)Measured byGraduated Cylinder or BeakerBalanceCalculationSee abovePractice Measuring(Always include units!)Answers will vary based on what sample was measuredReading a graduated cylinder:_____ _____ _____Reading a beaker:_____ _____ _____Volume using Displacement:Rock: _____Using an electronic balance:Rock: _____ Paper clip: _____Legos: _____Using graduated cylinder & balance (follow displacement directions under volume & formula under density):Vol: ______ Mass: ______ Mineral Density: ______Paper Clip: ____Pen: ____Table height: ____Your shoe: ____Door handle to floor:____(Help to Remember: King Henry Doesn’t Unusually Drink Chocolate Milk) 52235104856930050431701004652004639310131445Compare using >, < or =56 cm 6 m7 g 698 mg00Compare using >, < or =56 cm 6 m7 g 698 mg45612054000500Complete the following metric conversions. Use the ‘ladder’ above:1000 mg = 1 g160cm = 1600 mm1L = 1000 mL250m = .25 km14km = 14,000 m109g = .190 kgThe?customary measurement?system is used the U.S. This system measures:Length (distance) in inches, feet, yards, and milesVolume in cups, pints, quarts, and gallonsWeight in ounces, pounds, and tons Temperature in degrees Fahrenheit.477139027432000Measuring TemperatureCelsiusFahrenheitFreezing Point 0° C 32° FBoiling Point100° C212° F-81482152035Which one is used mostly in science? _Celsius_______________Which tool is used to measure temp? _Thermometer_________Why does this tool work? Many thermometers work because liquidchanges its volume, or the amount of space it takes up, based on its temperature. When a liquid is cold, it takes up less space than it does when it is warm. Many of the changes in temperature are very small. Thermometers use a large bulb fi led with liquid and a very narrow tube to show the changes.00Which one is used mostly in science? _Celsius_______________Which tool is used to measure temp? _Thermometer_________Why does this tool work? Many thermometers work because liquidchanges its volume, or the amount of space it takes up, based on its temperature. When a liquid is cold, it takes up less space than it does when it is warm. Many of the changes in temperature are very small. Thermometers use a large bulb fi led with liquid and a very narrow tube to show the changes. 30327609906000-28257524892000Converting Customary to Metric ................
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