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Introduction to Science

Introduction to Science. Background Information. Observation. When you use 1 or more of the senses to learn something about the environment Instruments can increase the power of observation. Examples. Meter Stick. Thermometer. Microscope Balance. Seismograph. Examples.

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Introduction to Science

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  1. Introduction to Science Background Information

  2. Observation • When you use 1 or more of the senses to learn something about the environment • Instruments can increase the power of observation

  3. Examples Meter Stick

  4. Thermometer

  5. Microscope Balance

  6. Seismograph

  7. Examples

  8. Inference • An interpretation made based on the observation. An inference is a prediction

  9. InferencevsObservation

  10. The color of the classroom is blue. Inference Observation

  11. The color of the classroom is blue. Inference Observation

  12. The rock was formed while underwater. Inference Observation

  13. The rock was formed while underwater. Inference Observation

  14. The planet earth is flat. Inference Observation

  15. The planet earth is flat. Inference Observation

  16. The temperature on Friday was 20.7oC Inference Observation

  17. The temperature on Friday was 20.7oC Inference Observation

  18. With your partner list 1 more observation&1 more inference

  19. Measurement • Contains a # and a unit 3.1 mm 7 min 32.4 mL 17.21 g

  20. Measurement • Contains a # and a unit • 3.1 mm • 7 min • 32.4 mL • 17.21 g

  21. Metric vs English units Unit Metric English Time Length Mass Volume

  22. Metric vs English units Unit Metric English Time mins, sec mins, sec

  23. Metric vs English units Unit Metric English Length meter, mm, cm yard, inch, mile km

  24. Metric vs English units Unit Metric English Mass gram, mg, kg oz, lb

  25. Metric vs English units Unit Metric English Volume liter, mL, cL, kL fluid oz, pt, qt

  26. Some measurements need a combination of units

  27. Some measurements need a combination of units

  28. Some measurements need a combination of units

  29. Some measurements need a combination of units

  30. Some measurements need a combination of units

  31. Rounding Rules • > 5 round up • < 5 round down

  32. Round to the nearest hundredth place 4.567 mL 17.256 cm3 0.115002 g 2,594 km

  33. Round to the nearest hundredth place 4.567 mL 4.57 mL 17.256 cm3 17.26 cm3 0.115002 g 0.12 g 2,594 km 2,594.00 km

  34. Scientific Notation • Move the decimal point until you get a # between 1 – 9 7,621,229.41 7.62122941

  35. Scientific Notation • Move the decimal point until you get a # between 1 – 9 • Count the # of places you moved the decimal (exponent) 7.62122941 x 106

  36. Scientific Notation • Move the decimal point until you get a # between 1 – 9 • Count the # of places you moved the decimal (exponent) • If you move the decimal to the left the exponent is positive (+) 7.62122941 x 106

  37. Scientific Notation • If you move the decimal to the right the exponent is negitive (-) .0026984221

  38. Scientific Notation • If you move the decimal to the right the exponent is negative (-) .0026984221 = 2.6984221 x 10-3

  39. You Try…

  40. Did you enter these #’s?

  41. Why is this important?

  42. Which number is smaller? 48,532,221,795,561.548 98,241,542,001.259542113

  43. If they are in scientific notation it’s easy! 4.8532221795561548 x 1013 9.8214542001259542113 x 1010

  44. Just Look At The Exponents!!! 9.8214542001259542113 x 1010

  45. Density Mass Volume D =

  46. What happens to density if the mass stays the same but volume increases? Mass Volume D =

  47. Mass Volume D = Plug is some numbers to find out.

  48. Plug is some numbers to find out. • 1 1 1 • 2 4 10 100 • .5 .25 .1 .01

  49. Density decreases as volume increases!!! • 1 1 1 • 2 4 10 100 • .5 .25 .1 .01

  50. Graphs • Easy to understand • Shows if a change occurred • Three types

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