3. Why?
everyone else does
easy to use ( if you grew up with it- based on units of 10)
1m = 10 dm = 100cm = 1000mm
x10 x10 x10
4. Known as SI system
systeme internationale
Prefixes indicate the multiple of 10
kilo= 1000 x 1000m=1kilometer
deci= 1/10th 1m=10dm
centi= 1/100th 1m=100cm
milli= 1/1000th 1m =1000mm
5. Standards
exact quantity people agree to use for comparison
Length- distance between 2 points: meter
Volume- amount of space an object occupies: liter
Mass- amount of matter in an object: kilogram
Time- seconds
Temperature- celsius or kelvin
6. Derived units
These are units obtained by combining different SI units.
example: density- mass/volume so g/mL or Kg/L
speed: m/sec or km/hr
7. Double-click to enter title
This rock-
diameter of 10 cm (length)
volume of 650mL (space)
mass of 2.2kg (matter)
|
|
density of 3.38g/mL
8. Match- measurement to property
Volume .99 g/ml
Mass 128mL
density .128kg
height 25 C
temperature 9 cm
9. Now watch this clip again-
Double-click to enter text
Video was not exported from SlideRocket
What does it tell you about the
metric system (other than
200ft=61m)? hint: Explain the humor
