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I. MEASUREMENTS

I. MEASUREMENTS. A. ALL MEASUREMENTS MUST HAVE TWO PARTS. 1. A NUMBER. – TELLS HOW MUCH IS BEING MEASURED. – TELLS WHAT IS BEING MEASURED. 2. A UNIT. EX: 1. gram. 50. seconds. time. mass. A. Base Units – a unit based on an object or event in the physical world.

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I. MEASUREMENTS

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  1. I. MEASUREMENTS A. ALL MEASUREMENTS MUST HAVE TWO PARTS 1. A NUMBER – TELLS HOW MUCH IS BEING MEASURED – TELLS WHAT IS BEING MEASURED 2. A UNIT EX: 1 gram 50 seconds time mass

  2. A. Base Units – a unit based on an object or event in the physical world. B. Derived units – unit defined from a combination of several base units ex: Density = mass / volume units: g / L

  3. Distance- the measure between two points Unit = meter (m) Instrument = ruler, meter stick, measuring tape A B longer distance shorter distance C D

  4. Time- the measure of the intervalbetween two events Unit = seconds (sec) Instrument- watch, stopwatch

  5. Mass- the measure of the amount of material in an object Unit = gram (g) Instrument- balance less mass more mass more mass less mass

  6. Volume- the amount of space an object occupies Unit = Liter (L) or cubic centimeters (cm³) or (cc) Instrument- graduated cylinder or ruler Formula: V = l x w x h (cube, rectangular prism)

  7. Density- the measure of the amount of mass in a given volume Unit = grams orgrams (g/L or g/cm³) liter cm³ D = mass volume Instrument- balance and graduated cylinder

  8. Temperature- the amount of energy in the particles of a substance Unit = degrees Celsius (°C) , Fahrenheit (°F), Kelvin (K) Instrument- thermometer K = 273 -°C °F = °C(1.8)+32 °C = 273+K °C = °F-32 (1.8)

  9. Area- the measure of the surface of an object Unit = centimeters squared (cm²) Instrument- ruler A = l x w (square, rectangle) A = pr2 (circle) outside of outside shell balloon of egg

  10. HAVE A NICE DAY

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