Presentation on theme: "Making Measurements in Science"— Presentation transcript:
1Making Measurements in Science The standard system of measurement all scientists use is theMETRIC SYSTEM
2Measuring MassMass is a measurement of the amount of matter in an objectInstrument: Balance (triple beam, double pan or electronic)Base unit: gram (g)Other common units:milligram (mg)kilogram (kg)Which is larger than a gram? Which is smaller?
3Measuring DistanceDistance is a measurement of how far apart objects are from each other.Instrument: Meter stickBase unit: meter (m)Other common units:millimeter (mm)centimeter (cm)kilometer (km)Which of the units are larger than a meter? Which are smaller?
4Measuring Liquid Volume Volume is a measurement of the amount of space an object or matter occupiesInstrument: graduated cylinder or beakerWhich 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?
5Reading the MeniscusWhen measuring liquid volume, you must remember to read the meniscus properlyThe meniscus is curve of a liquid when placed in a cylinderAlways make your measurement at the middle of the meniscusWhat is the measurement in the graduated cylinder?
6Measuring Solid Volume How do you measure the volume of an object that has a regular shape, such as a block of wood?Instrument: meter stickFormula: Volume = l x w x hBase unit: cubic meter (m3)Other common unit:cubic cm (cm3)Why is the unit cubed?
7Measuring 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 canBase unit: cubic meter (m3)Other common unit:cubic cm (cm3)Which do you think is more accurate?
8Measuring WeightWeight is a measurement of the force of gravity acting upon an objectInstrument: Spring scaleBase unit: Newton (N)
9Measuring Temperature Temperature is the measurement of the energy of the molecules in an objectThe higher the temperature, the faster the molecules are movingInstrument: thermometerBase unit: degrees Celsius (oC)Other unit: Kelvin (K)