4 To be clear:If there are three names on the board, I will not open the store at the end of the class period.
5 MeasurementsObjective: Achievers on the ROAD to College will be able to describe and use different types of measurement tools including: rulers, thermometers, scales, microscopes, balances, calculators).
6 Qualitative vs. Quantitative Measurements A (1)qualitative measurement deals with descriptions, data can be observed but not measured.Examples: (2)colors, textures, smells, tastes, appearancesA (3)quantitative measurement deals with numbers; data can be measured/counted.Example: (4)height, length, area, weight, speed, time, temperature, costs, age
10 MassWhen we measure mass, or (8)how much stuff an object has in it, we use (9)grams. Most of you are measured in kilograms. There are 1000 grams in one kilogram
11 Mass (10) Triple beam balance: that’s what we use in this school. There are a couple of different tools for measuring mass(10) Triple beam balance: that’s what we use in this school.(11) Electronic balance: this is what you may use in college, its very precise(12)Spring scale: for measuring very small things
13 LiquidsWhen we measure liquids the unit we use is (13)Liter. Often in science we will use a milliliter. There are 1000 mL in a liter
14 LiquidsThere are many tools we can use to measure liquids:(15) Graduated cylinder: which is best for measuring amounts that must be very precise.To determine the volume of the liquid, read the bottom of the curve. This curve is called the (14)Meniscus.
16 Volume Volume = length x width x height Tool: (16)meter stick Units: meters cube (m3)Volume = length x width x heightlengthwidthheight
17 TemperatureThe when we measure temperature the unit we measure it in is degrees (18)CelsiusThe tool we always use is a (17)thermometer
18 Guided Practice: Test Questions Which of the following can NOT be used to measure volume? A. Balances C. Pipettes B. Beakers D. Graduated cylinders
19 Guided Practice: Test Questions Which of these will give the MOST accurate and precise measurement of 15 mL of liquid to be placed in a test tube? A A 100 mL graduated cylinder B A 25 mL graduated cylinder C A 10 mL beaker D A 50 mL beaker
20 Guided Practice: Test Questions Aisha measured the volume of a solvent using a graduated cylinder. What is the correct volume in mL? A. 136 mL B. 138 mL C. 141 mL D. 142 mL
21 Independent PracticeUsing your notes (or if you’re a college bound scholar, not using your notes) Answer the questions on this worksheetAnything you do not finish will be homework