1 / 10

NIS – PHYSICAL SCIENCE

NIS – PHYSICAL SCIENCE. Lecture 3 SI Units August 19, 2010 Ozgur Unal. SI UNITS. Measuring distance : Length is the distance between two points . In SI, we use meter (m) to measure distances . Measure the length of your pencil using your rulers. Measuring volume :

geoff
Télécharger la présentation

NIS – PHYSICAL SCIENCE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NIS – PHYSICAL SCIENCE Lecture 3 SI Units August 19, 2010 OzgurUnal

  2. SI UNITS Measuringdistance: Length is thedistancebetweentwopoints. In SI, weusemeter (m) tomeasuredistances. Measurethelength of yourpencilusingyourrulers Measuringvolume: • Volume is theamount of spaceoccupiedby an object. • Forobjectswithregularsizes (such as a brick), you can calculatethevolume. • Volume of a liquid is expressed in liters. • 1 L = 1 dm3

  3. SI UNITS Measuringmatter: Mass is a measurement of thequantity of matter in an object. Unit of mass in SI is kilograms (kg) Density • Density is themassperunitvolume of a material. • density = mass / volume • CheckTable 3 on page 19 fordensities of differentmaterials

  4. SI UNITS Measuring time: It is sometimesnecessarytomeasuretheamount of time betweenevents (justlikeyoudidyesterdaywithpopcorns). SI unit of time is second (s). Measuringtemperature: • Temperaturetellsyouhow hot orcold an object is. • Differentunitsfortemperature(Celsius, Kelvin, Fahrenheit). • SI unit of temperature is Kelvin (K). • In K scale, waterfreezes at 273 K andboils at 373 K. • You can convertbetweenunitsdoingsomecalculations.

  5. Minilab Minilab: Readtheminilab on page 19. Form groups of 2 or 3. Instead of a pencilusetheitemgiventoyouandfollowtheinstructions. Answer “Analysis” questions. Cleanupyourdeskaftertheminilab.

  6. NIS – PHYSICAL SCIENCE Lecture 4 CommunicatingWithGraphs August 20, 2010 OzgurUnal

  7. Graphs A graphis a visualdisplay of data. Graphsareusefulfordisplayingnumericalinformation in business, science, sports, medicineetc. Threedifferenttypes of graphs: Line, Bar andCircle

  8. LineGraphs • Placetheindependentvariable on the x-axis. • Make sure tolabeltheaxiswithappropriateunits. • Consecutivenumbersshould be evenlyspaced. • Example: Seedgrowth A linegraphshowstherelationshipbetweentwovariables: Dependentandindependentvariables. Most of the time theindependentvariable is the time. CheckTable 4 andFigure 18.

  9. Bar andCircleGraphs A bar graph is usefulforcomparinginformationcollectedbycounting. Each bar represents a quantitycounted. Placetheindependentvariable on the x-axis. Example: Number of students in eachgrade. • A circlegraph(or a piegraph) is usedtoshowhowsomefixedquantity is brokendownintoparts. • CheckFigure 21 on page 26. • Tocreate a circlegraph, start withthe total amount, andthencalculatetheratio of eachcomponent in the total. • Findouttheanglesforeachpie.

  10. Using Graphs Some data can be shownbymorethanonetype of graph. Checkthisout:

More Related