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1.4 Metric System Do Now:

1.4 Metric System Do Now:. Make a list of metric measurements and English Measurements. Most scientist use the metric system (also known as the International System of Units, SI ) when collecting data and performing experiments. Why do you think we all use the metric system?

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1.4 Metric System Do Now:

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  1. 1.4 Metric SystemDo Now: Make a list of metric measurements and English Measurements

  2. Most scientist use the metric system (also known as the International System of Units, SI) when collecting data and performing experiments. Why do you think we all use the metric system? • http://www.youtube.com/watch?v=DQPQ_q59xyw&feature=related Scientific Measurements

  3. Meter (m) Gram (g) Liter (L) Celsius (°c) Foot (ft) Yard (yd) Pound (lb) Quart (qt) Gallon (gal) Fahrenheit (F) Volume Length Mass King Henry Died Unexpectedly Drinking Chocolate Milk Metric ~vs~ English Temperature

  4. Write the correct abbreviation for each metric unit. • Kilogram _____ 6) Liter _____ 2) Meter _____ 7) Kilometer _____ 3) Gram _____ 8) Centimeter _____ 4) Milliliter _____ 9) Milligram _____ 5) Millimeter _____ 10) dekameter_

  5. Only 3 things YOU need to know for metric conversions: • You need to be able to count to 6 • Know your left from your right • King Henry Died Unexpectedly Drinking Chocolate Milk That’s it! X X

  6. 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

  7. The decimal moves the same number of places as steps and in the same direction. King Henry Died Unexpectedly Drinking Chocolate Milk 35 kg = _________cg 3,500,000 You jump 5 spaces to the right. So you move the decimal 5 spaces to the right!

  8. 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 600cm < > 0.698g

  9. Metric worksheet http://www.youtube.com/watch?v=IhtgKHYZti0&NR=1&feature=endscreen

  10. Metric Conversion Challenge Try these conversions, using the ladder method. 10) 2000 mg = _______ g 15) 5 L = _______ mL 20) 16 cm = _______ mm 11) 104 km = _______ m 16) 198 g = _______ kg 21) 2500 m = _______ km 12) 480 cm = _____ m 17) 75 mL = _____ L 22) 65 g = _____ mg 13) 5.6 kg = _____ g 18) 50 cm = _____ m 23) 6.3 cm = _____ mm 14) 8 mm = _____ cm 19) 5.6 m = _____ cm 24) 120 mg = _____ g

  11. Compare using <, >, or =. 25) 63 cm 6 m 27) 5 g 508 mg 29) 1,500 mL 1.5 L 26) 536 cm 53.6 dm 28) 43 mg 5 g 30) 3.6 m 36 cm

  12. D. Temperature = degrees Celsius 1. Measures how much heat something contains 2. To convert from Fahrenheit to Celsius: 5/9 x (oF -32)

  13. Determine the temperature in Fahrenheit • (Lets use 60oF as an example) b. Using your calculator, subtract 32 c. Multiply the result times 5 d. Divide that answer by 9 e. Your final answer is the temperature in Celsius (Our example: about 16 oC)

  14. Celsius to Fahrenheit • 9/5 (oC) + 32 • Try this one: Change 30 oC to degrees Fahrenheit

  15. Celsius to Fahrenheit • Answer: 86 oF

  16. Try Some on Your Own! • Convert 75 oF to oC • Convert 40 oF to oC

  17. 30°C is hot, 20°C is pleasing, 10°C is not, 0°C is freezing.

  18. III. Microscopes A. We use light microscopes B. Also called compound microscopes (2 lenses) 1. this is why the images appear upside down and backwards

  19. C. Electron Microscope – Uses electrons to produce images instead of light 1. can magnify 500,000 times 2. uses a vacuum so specimens are not alive

  20. Scanning Electron Microscope (SEM) • Produces 3-D image • Electrons bounce off gold-coated specimen • Transmission Electron Microscope (TEM) • Produces a 2-D image • Electrons beam through specimen Types of Electron Microscopes

  21. The samples shown above are (clockwise from top left) an ant (Lasius flavus), passion fruit (Passiflora caerulea) pollen, a  freshwater shrimp parasite (Epistillis sp.), sunflower (Helianthus anuus) pollen and central, a greenbottle (Lucilia sericata) foot.

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