 Making Measurements in Science

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Making Measurements in Science
The standard system of measurement all scientists use is the METRIC SYSTEM

Measuring Mass Mass is a measurement of the amount of matter in an object Instrument: 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?

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?

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?

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?

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?

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?

Measuring Weight Weight is a measurement of the force of gravity acting upon an object Instrument: Spring scale Base unit: Newton (N)

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)

Any Questions?