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# Making Measurements in Science

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### Making Measurements in Science

1. 1. Making Measurements in ScienceThe standard system of measurement all scientists use is the METRIC SYSTEM
2. 2. Measuring Mass Mass is a measurement of the amount of matter in an object Instrument: Balancetriple beam,double panElectronic Base unit: gram (g) Other common units:  milligram (mg)  kilogram (kg) Which is larger than a gram? Which is smaller?
3. 3. Measuring Distance Distance is a measurement of how far apart objects are from each other. Instrument: Meter stick Base unit: meter (m) Other common units:  millimeter (mm)  centimeter (cm)  kilometer (km) Which of the units are larger than a meter? Which are smaller?
4. 4. Measuring Liquid Volume Volume is a measurement of the amount of space an object or matter occupies Instrument: graduated cylinder or beaker Which instrument will give you a more accurate measurement? Base unit: liter (L) Other common unit:  milliliter (mL) Is this smaller or larger than a liter?
5. 5. Reading the Meniscus When measuring liquid volume, you must remember to read the meniscus properly The meniscus is curve of a liquid when placed in a cylinder Always make your measurement at the middle of the meniscus What is the measurement in the graduated cylinder?
6. 6. Measuring Solid Volume How do you measure the volume of an object that has a regular shape, such as a block of wood? Instrument: meter stick Formula: Volume = l x w x h Base unit: cubic meter (m3) Other common unit:  cubic cm (cm3) Why is the unit cubed?
7. 7. Measuring Solid Volume Water Displacement Method How do you measure the volume of an object that has a irregular shape, such as a rock? There are actually 2 methods, both involving water. Instrument: graduated cylinder or overflow can Base unit: cubic meter (m3) Other common unit:  cubic cm (cm3) Which do you think is more accurate?
8. 8. Measuring Weight Weight is a measurement of the force of gravity acting upon an object Instrument: Spring scale Base unit: Newton (N)
9. 9. Measuring Temperature Temperature is the measurement of the energy of the molecules in an object The higher the temperature, the faster the molecules are moving Instrument: thermometer Base unit: degrees Celsius (oC) Other unit: Kelvin (K)
10. 10. Any Questions?