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Measurement Notes

Measurement Notes. Video. http://www.youtube.com/watch?v=DQPQ_q59xyw 5 min video metrics from NASA. Article: How many gills in a cubic dekameter. National Metrics Week: Oct 10 th 10 th day of the 10 th month Official name of the metric system

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Measurement Notes

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  1. Measurement Notes

  2. Video • http://www.youtube.com/watch?v=DQPQ_q59xyw 5 min video metrics from NASA

  3. Article: How many gills in a cubic dekameter • National Metrics Week: Oct 10th • 10th day of the 10th month • Official name of the metric system • International System of Units: abbreviated: SI Units • U.S. uses non metric measurement called • English System • Imperial system • US customary system • Which is larger? • 1 liter or 1 quart? • One liter • 1 meter or 1 yard? • 1 meter

  4. Converting using Metric Prefixes Tetra x trillion King Henry Died By Drinking Chocolate Milk

  5. Chart for metric prefixes

  6. Reference page in agenda Converting a small unit to a large unit Move decimal to the left Converting a large unit to a small unit Move decimal to the right

  7. King Henry Died By Drinking Chocolate Milk

  8. Word Bank for definitions: • Mass divided the volume of a substance, • Amount of space between two points • Amount of space that a substance occupies, 3D • Measured period/duration between two events • Measurement of the amount of heat/kinetic energy of a substance • Amount of matter in an object • A measurement of the force of gravity on an object

  9. Exploration of the planet mars • Newscast of successful Mars Curiosity landing 2012-09-06:http://www.msnbc.msn.com/id/48511087/ns/technology_and_science-space/t/nasas-curiosity-rover-scores-touchdown-mars/#.UEf0tY2PUqk • Article: Metric mishap caused loss of NASA orbiter

  10. Metric Mishap Questions: Answer the following questions on notebook paper. Give thorough answers. • Describe the different teams that had to coordinate to build and operate the Mars Climate Orbiter. The engineering team from the Lockheed Martin company used english system units to build and operate the trusters on the spacecraft. The NASA navigation team that communicated with the space craft to control the trusters used metric units to calculate when and how long to use them. • How does this article emphasis the need for people who are working together to use one system of measurement? In other words, explain in detail why and how the Mars Orbiter was destroyed. The orbiter went 100 km closer to the planet then planned and then overheated which made the engine stop working so it when through the mars atmosphere and continued out into space toward the sun.

  11. Use the correct procedure for using a graduated cylinder: (estimating and measuring volume lab) 1. Set the graduated cylinder on a LEVEL surface. 2. The curve of the surface of the liquid within the graduated cylinder is called the MENISCUS 3. Your eye must be the LEVEL with the surface of the meniscus. 4. Measure from the BOTTOM of the meniscus

  12. Measuring Distance with a rulerPractice worksheet

  13. Converting units: Practice quiz questions 1. • a. Which is a larger unit centimeter or meter? • meter! • b. How many times larger is a centimeter then a meter? • 100 (move decimal 2 spots) • c. Starting from centiwhich direction will you move the decimal to go to meter? • left • 0.12 cm = ____m • 0.12 cm = .0012m

  14. Practice quiz questions 2. • a. Which is a largerunit milligram or kilogram? • kilogram! • b. How many times larger is a milligram then a kilogram? • 1,000,000 move decimal 6 times • c. Starting from milliwhich direction will you move the decimal to go to kilo? • left • 51,122,000 mg= ____kg • 51,122,000 mg = 51.122 kg

  15. Practice quiz questions 3. • a. Which is a larger unit centigram or milligram? • centigram! • b. How many times larger is a centimeter then a millimeter? • 10 (move decimal 1 spots) • c. Starting from centiwhich direction will you move the decimal to go to milli? • right • 0.12 cm = ____mm • 0.12 cm = 1.2 mm

  16. What’s so great about DENSITY?? • Basically it is a measurement of how tightly packed a substance is. • At room temperature the density of materials can help to identify the substance regardless of its size and shape. • The density of material is useful for predicting how materials will interact when mixed together. • Floating or not?

  17. http://www.youtube.com/watch?v=H2Rlt3YM1To also 4 min video faster paced from Houston Children’s museumhttp://www.youtube.com/watch?v=eSAW2539F44 4 min video basic science teacher talking

  18. Consider a brick and sponge of equal size. Which is more dense? Explain your reasoning. • The brick is more dense. • The brick has a greater mass than the sponge.

  19. Consider two pounds of feathers and one pound of steel. Which is more dense? Explain your reasoning. • The steel is more dense. • Two pounds of feathers would have a much greater volume then 1 pound of steel. Therefore according to the equation the mass will be divided by a greater volume making the density less. • Density = mass Volume 2 lbs 1 lb

  20. Density • A measurement of how much matter is contained in a certain volume of a substance • Density = mass Volume • Common units of density g/ml = g/cm3 • The formula can be rearranged three ways 1. Density = mass Volume 2. Mass = density x volume 3. Volume = mass density M D V

  21. How does density determine what will float and sink? • Substances less dense then water will float • Substances more dense then water will sink.

  22. What is the density of water? • 1 g/cm3 (pure water, at a “normal liquid temp) • Floating simulation: http://www.sciencejoywagon.com/explrsci/media/density.htm

  23. Explain what a helium balloon floating has to do with density. • Helium is a gas that is less dense then air therefore they float upward.

  24. Hot air balloons rely only on air. Explain how density is employed in their ability to float? • Hot air is less dense then cold air. • The air inside the balloon is heated and therefore it moves up floating above the cooler air.

  25. Practice Problems: •  1.   A cube has a side that is 4 cm long. It has a mass of 128 grams.  What is its density? • Density = mass = 128 g = 2 g . volume 64 cm3cm3 you have to figure out the volume of the cube volume = length x width x height volume = 4 cm x 4 cm x 4 cm = 64cm3

  26. Practice problem 2 • 2.     A rectangle has a length of 3 cm, a width of 2 cm, and height of 1 cm. It has a mass of 120 grams. What is its density? • Density = mass = 120 g = 12 g . volume 6 cm3cm3 you have to figure out the volume of the rectangle volume = length x width x height volume = 3 cm x 2 cm x 1 cm = 6 cm3

  27. Practice 3, 4 • 3.     A cube has a side that is 3 cm long. It has a density of 2 g/cm3. What is its mass? • Mass = vol x density = 27 cm3 x 2 g/cm3 = 54 g • 4.     A rectangle has a length of 5 cm, a width of 4 cm, and a height of 2 cm.  It has a density of 3 g/cm3. Calculate its mass.Mass = vol x density = 40 cm3 x 3 g/cm3 = 120 g

  28. Challenge Practice 5, 6 • 5.     A cube has a mass of 128 grams and a density of 2 g/cm3. Find the length of one side. • Volume = mass/density = 128 g/ 2 g/cm3 = 64 volume = l x w x h = 4cm x 4 cm x 4cm Length of one side is 4 cm • 6.     A rock has a density of 17 g/cm3. If it is cut into 3 equal size pieces, what will be the density of each piece? • Density of rock consistent through out. The density will be 17 g/cm3

  29. THE SCIENTIFIC METHOD http://www.teachertube.com/viewVideo.php?video_id=66752 scientific method rap http://educationalminimovies.com/index.php?option=com_content&view=category&id=334:scientific-method&Itemid=55 list of other video

  30. Density block lab

  31. Graphing • http://www.youtube.com/watch?v=9BkbYeTC6Mo 10 minute intro to graphing

  32. Elements of a good graph • Descriptive title describes everything contained on the graph • X and Y axis have labels and units • Independent variable along bottom at x axis • Dependent variable along top at y axis • Equal increments between numbers on axis

  33. Types of graphs Scatter plot histogram Pie chart Line graph Bar graph

  34. Best Fit line • A straight line added to your graph that has roughly half the points of a scatter plot above the line and half the points below the line.

  35. CONSTRUCT A GRAPH:Obtain data for the high temperature for this day of the year starting this year going back every four years no further than 1960. Use the website: http://www.almanac.com/weather/history/RI/Providence/2006-09-29

  36. Additional resources • http://www.nist.gov/pml/wmd/metric/everyday.cfm Website about metrics in the USA

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