Upload
linus-irwin
View
41
Download
0
Tags:
Embed Size (px)
DESCRIPTION
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. - PowerPoint PPT Presentation
Citation preview
CHAPTER 1
Scientific Measurement
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 objectMass = 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 Hecta Deka Base Deci Centi Milli
x1,000 x100 x10 x1 1/10 1/100 1/1,000
meters (m) liters (L) grams (g)