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How do scientists in other countries understand each other?

How do scientists in other countries understand each other?. Think…. If I speak Italian and you only understand English, can we communicate with each other? Why? Or why not?. Aside from language, what else needs to be universal for science?. Answer. Measurements What do we measure?.

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How do scientists in other countries understand each other?

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  1. How do scientists in other countries understand each other?

  2. Think….. • If I speak Italian and you only understand English, can we communicate with each other? • Why? Or why not?

  3. Aside from language, what else needs to be universal for science?

  4. Answer • Measurements • What do we measure?

  5. What do we measure? • Length • Height • Width • Volume • Temperature • Time • Speed • Acceleration • Density • Weight

  6. How do we measure these things? • Length • Height • Width • Volume • Temperature • Time • Speed • Acceleration • Density • Weight

  7. What do scientists use to measure these things? • Length • Height • Width • Volume • Temperature • Time • Speed • Acceleration • Density • Weight

  8. There needs to be a universal measuring system • What is it? • International System of Units (SI) • SI units are what scientists use to label things they measure • Ex. 12m, 6.2cm, 55km/hr • We will be using these units all year • Here is a list to copy to reference

  9. SI units • Mass – grams • Length – meters • Volume – Liters or meters3 (length x width x height) • Temperature – Celsius or Fahrenheit • Time – seconds • Speed – meters/second (distance/time) • Acceleration – meters/second2 • Density – grams/meters3 (mass/volume) • Weight – newtons (kg x m/s2) (mass/acceleration) • Energy – Joules (kg x m2/s2)

  10. Prefixes for SI Units k= kilo = 103 h= hecta = 102 da=deca = 101 d=deci = 10-1 c =centi = 10-2 m=milli = 10-3 M= Mega = 106 G= Giga = 109 µ =micro = 10-6 n = nano = 10-9

  11. Time for some practice • 356mm = _________ m • 1.289 km = ________m • 67cm = _________mm • 7.329 x 103m = _________m • 0.00876 x 10-3km = ______km

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