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Reviewing Measurement!

Reviewing Measurement!. Measuring in Science. 1. Choose___________________. 2. Determine________________. You wouldn’t use kilometers to measure the width of a penny!. 3. Record________________. Measuring in Science. 1. Choose appropriate tool . 2. Determine proper unit.

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Reviewing Measurement!

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  1. Reviewing Measurement!

  2. Measuring in Science 1. Choose___________________ 2. Determine________________ • You wouldn’t use kilometers to measure the width of a penny! 3. Record________________

  3. Measuring in Science 1. Choose appropriate tool 2. Determine proper unit • You wouldn’t use kilometers to measure the width of a penny! 3. Record value & unit

  4. Tools: ___________________ Time is always the _________________ because it _______________________ and the scientist decides the interval. Measuring Time Definition:____________________________________________________________________ Unit: _______

  5. Tools:stopwatch or clock Time is always the independent variable because it does not depend on anything and the scientist decides the interval. Measuring Time Definition:how long it takes for something to happen. Unit:seconds (this is the standard unit however there are others).

  6. Measuring Distance Definition:______________________________________ Tools:____________________ Unit: ______________________

  7. Measuring Distance Definition:how far something is from one point to another. Tools:ruler, measuring tape Unit:meter, centimeter, kilometer

  8. Measurement Systems English System Metric System Time ____________ __________ Distance __________ __________ Sometimes these units aren’t enough!!! So…we add _____________to our units.

  9. Measurement Systems English System Metric System Time hour, minute seconds Distance inch, mile meters Sometimes these units aren’t enough!!! Sooooo…we add prefixes to our units.

  10. Prefixes K____ H____ D__ B_ D_______ C________ M____ ______ ______ Hecto 100 Deka- _____ Basic Unit (g, m, L) Identify the Basic Unit for each letter below: g=_________ m=________ L=_________ ______ 0.1 ______ ______ Milli- 0.001

  11. Prefixes KingHenryDiedByDrinkingChocolateMilk Kilo- 1000 Hecto- 100 Deka- 10 Basic Unit (g, m, L) Identify the Basic Unit for each letter below: g=__Grams_ m=_meters_ L=_Liters_ Deci- 0.1 Centi- 0.01 Milli- 0.001

  12. Let’s Practice! Determine the best measurement for: • The length of ten city blocks___________ • Across the science classroom________ • The length of your foot_________ • The thickness of a dime_________

  13. Practicing Conversions 36 cm = ____ m 28 mL = ____ L 5.25 m = ____ mm 480 mg = ____ g

  14. It is often easier to transform data into a ____________ to get a _____________________. ______ ____ _____ Definition:_________________________________________________________________________

  15. It is often easier to transform data into a GRAPH to get a visual picture. Pie Line Bar Definition: A model that helps us to picture the relationship between two variables.

  16. Consistent Data What does it mean to be consistent? Which Group has the most consistent data?

  17. Precision vs. Accuracy • _________________ refers to how close a measurement is to the true value. • ________________describes how close together repeated measurements are. Goes along with “most consistent”

  18. Accuracy vs. Precision • Accuracy refers to how close a measurement is to the true value. • Precisiondescribes how close together repeated measurements are. • Goes along with “most consistent”

  19. Prefixes

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