Presentation on theme: "Making Measurements in Science"— Presentation transcript:
1 Making Measurements in Science The standard system of measurement all scientists use is theMETRIC SYSTEM
2 Measuring 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?
3 Measuring 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?
4 Measuring 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?
5 Reading 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?
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 stickFormula: Volume = l x w x hBase unit: cubic meter (m3)Other common unit:cubic cm (cm3)Why is the unit cubed?
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 canBase unit: cubic meter (m3)Other common unit:cubic cm (cm3)Which do you think is more accurate?
8 Measuring WeightWeight is a measurement of the force of gravity acting upon an objectInstrument: Spring scaleBase unit: Newton (N)
9 Measuring 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)