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Scientific Measurement. Chapter 1. International System of Units (S.I.). Universally used by scientists Advantage of S.I. Le Systeme International d’Unites Everything is in multiples of 10. Length / Distance. Length = measured in meters (m) 100 cm = 1 m : 3.3 ft = 1 m. Volume.
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Scientific Measurement Chapter 1
International System of Units (S.I.) • Universally used by scientists • Advantage of S.I. • Le Systeme International d’Unites • Everything is in multiples of 10
Length / Distance Length = measured in meters (m) 100 cm = 1 m : 3.3 ft = 1 m
Volume • Volume is the amount of space something occupies • Volume = measured in liters (L) • To calculate the volume of a: • Rectangle – length x width x height • Liquid – graduated cylinder • Irregular object – water displacement
How to read a graduated cylinder Place the graduated cylinder on a FLAT surface. Move down to eye level Read the meniscus (level at the bottom of the curve in the liquid)
Mass • Mass is the amount of matter in an object • Mass = measured in grams (g) • To calculate mass: • Use a balance scale – balance with an object of known mass ____________________________________________ • **Mass is different from weight – weight is a measure of the pull of gravity • Weight changes in different gravities, mass doesn’t change • Unlike mass, weight can be zero. An example of this is an astronaut floating in space - there's no gravity acting on his body and, therefore, he has no weight. • Weight is commonly measured in Newtons.
Temperature • Celsius is the most commonly used to express temperature. • Celsius Fahrenheit • T(f) = 1.8C + 32 • C = T(f) – 32 / 1.8
“King Henry Died By Drinking Chocolate Milk” Metric Units Kilo HectaDeka Base DeciCentiMilli x1,000 x100 x10 x1 1/10 1/100 1/1,000 meters (m) liters (L) grams (g)