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Math and Science

Math and Science. A Standard Measurement System. Using SI as the standard system of measurement allows scientists to compare data and communicate with each other about their results. SI units are based on multiples of 10. We will be using SI and other metric units. The Metric System.

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Math and Science

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  1. Math and Science

  2. A Standard Measurement System • Using SI as the standard system of measurement allows scientists to compare data and communicate with each other about their results. SI units are based on multiples of 10. We will be using SI and other metric units.

  3. The Metric System • The SI system is considered to be the modern metric system. • It is considered a universal language for scientists, doctors, the military, and most countries. • The US is one of the only countries not on the metric system. • We use The English System which includes mph, feet, pounds, gallons, Farenheit, etc.. Why do you think the US has not switched to the Metric System?

  4. Basic Units • Length = meter (m) • Mass = gram (g) • Volume = Liter (L) • Temperature = degrees celcius (°C)

  5. Rule of Dimensional Analysis • Larger unit to smaller unit, you multiply by 10 or powers of 10 • Smaller unit to larger unit, you divide by 10 or powers of 10 Kind humans don’t make dogs climb mountains. Kilo hecta deca meter deci centi milli Liter gram

  6. Let’s look at the table on your worksheet: You will finish the rest later!

  7. Metric Conversions Ladder Method T. Trimpe 2008 http://sciencespot.net/

  8. 1 2 3 MetersLitersGrams How do you use the “ladder” method? 1st – Determine your starting point. 2nd – Count the “jumps” to your ending point. 3rd – Move the decimal the same number of jumps in the same direction. Starting Point Ending Point __. __. __. 2 3 1 Ladder Method KILO1000Units HECTO100Units DEKA10Units DECI0.1Unit CENTI0.01Unit MILLI0.001Unit 4 km = _________ m How many jumps does it take? 4. = 4000 m

  9. Compare using <, >, or =. 56 cm 6 m 7 g 698 mg Conversion Practice Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm 14 km = _______ m 109 g = _______ kg 250 m = _______ km 1.0 1000 1600 0.250 14,000 0.109 < >

  10. Why use Graphs? • Because of their visual nature, graphs can reveal patterns or trends that words and data tables cannot. • Scientists commonly use bar graphs, circle graphs, and line graphs.

  11. The Importance of Graphs • Line graphs are used to display data to show how one variable changes in response to another variable. In this experiment, the responding variable is the time it takes for the water to boil. The manipulated variable is the volume of water in the pot.

  12. Plotting a Line Graph:

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