As the crow flies NOTES A rooster crows only when it sees the light. Put him in the dark and he'll never crow. I have seen the light and I'm crowing. - Muhammad Ali 2014, Simplify Science Select LLC Learning Goals Students will be able to: 1)Differentiate between distance and displacement. 2)Convert between different metric units of length. 2014, Simplify Science Select LLC What we already know Laboratory Investigations require measurement Length can be measured with a ruler/meter stick Values can be changed from one unit to another: 3 feet = 1 yard 2014, Simplify Science Select LLC What we learned in the lab Length can be measured in two different ways. Distance and Displacement CAN have the same value Distance and Displacement CAN have different values 2014, Simplify Science Select LLC START STOP Length Fundamental Unit of Measure Space between any two points Standard Unit: meter (m) Defined by how far light travels in 1/299,972,458 th of a second. 2014, Simplify Science Select LLC Distance (d) SCALAR (which means it is a number ONLY) DEFINED AS - the total length traveled between two points (Stretch the whole line out and measure) MEASURED WITH meter stick or metric ruler UNITS meter (standard), miles, kilometers, feet 2014, Simplify Science Select LLC Start Stop Fundamental A-1 Which of the following are properties of distance? Mark ALL that apply a.Scalar b.Vector c.Measurement of Length d.Measured with meter stick e.Standard Unit = kilometer f.d g.x 2014, Simplify Science Select LLC Developing A-2 Write a sentence describing how you would measure the distance between your 1 st period and 2 nd period classes. Use 3-5 terms from your academic vocabulary. 2014, Simplify Science Select LLC Proficient A-3 A student is looking at different routes from University Station to Tai Po Market Station. The walking path is marked in black. Which correctly demonstrates the distance a walker would travel? 2014, Simplify Science Select LLC A B Mastery A-4 A woman walks two blocks north, turns east walks for 5 blocks before heading south for 8 blocks. What is the distance the woman travels? (1 block = 200 m) 2014, Simplify Science Select LLC Displacement (x) VECTOR (which means is has a number AND direction) DEFINED AS the shortest length between the start and stop point. MEASURED WITH meter stick or metric ruler UNITS meter (standard), miles, kilometers, feet 2014, Simplify Science Select LLC Start Stop Fundamental B-1 Which of the following are properties of displacement? Mark ALL that apply a.Scalar b.Vector c.Measurement of Length d.Measured with meter stick e.Standard Unit = kilometer f.d g.x 2014, Simplify Science Select LLC Developing B-2 Write a sentence describing to why displacement between your 1 st period and 2 nd period classes would be very difficult to measure without a jackhammer. Use 3-5 terms from your academic vocabulary. 2014, Simplify Science Select LLC Proficient B-3 A student is looking at different routes from University Station to Tai Po Market Station. The walking path is marked in black. Which correctly demonstrates the displacement of a walker? 2014, Simplify Science Select LLC A B Mastery B-4 A woman walks two block north, turns east walks for 5 blocks before heading south for 8 blocks. What is the displacement of the woman? (1 block = 200 m) 2014, Simplify Science Select LLC STOP LOOK AT YOUR ANSWERS TO: A-4 B-4 Do your answers have UNITS? 2014, Simplify Science Select LLC Units Dont Really Matter Right Mars Climate Orbiter: Cost $330,000, Ground Software used feet Onboard Software used meters Crashed with a loss of all material, instruments, and data Image Credit: JPL/NASA 2014, Simplify Science Select LLC Why Convert? 1)Measurement cannot always be done in standard units (tiles, feet, cm, miles, etc.) 2)Fundamental Constants are often used in formulas requiring standard units. (gravity is m/s 2 ) 2014, Simplify Science Select LLC Common English Conversion Factors LengthMass 2.54 cm = 1 inch 2.2 lbs = 1 kg 1609 m = 1 miles Temperature Time 1.8(F 32) = Celsius 1 hr = 3600 s 2014, Simplify Science Select LLC Metric Conversion Factors Memorize this Its IMPORTANT NamePrefixBase UnitsConversion to Base KilokGramsX 1000 CenticSeconds/100 Millimmeters/1000 2014, Simplify Science Select LLC Dimensional Analysis Method for EASILY converting between quantities when more than one step A bakery uses 34.5 eggs to complete 1 batch of a recipe. The bakery wants to complete 12 batches today. How many cartons of eggs do they need? 12 batches | 34.5 eggs | 1 carton = | 1 batch | 12 eggs 2014, Simplify Science Select LLC Fundamental C-1 Match the prefix with the appropriate factor for converting from meters to _________ KilometersX 1000 CentimetersX 100 Millimeters/1000 2014, Simplify Science Select LLC Developing C-2 Match the number with the distance so it will equal 100 m? a I. cm b. 0.1II. Km c. 10,000III.mm d. 100,000 IV. Miles 2014, Simplify Science Select LLC Proficient C-3 How many meters are in a marathon of 26.2 miles. 2014, Simplify Science Select LLC Mastery C-4 A car travels 80 miles per hour down the highway. How fast is this in kilometers per hour? 2014, Simplify Science Select LLC