Transcript Unit 1—Nature of Science

Thursday, August 18, 2011
• Pick up the Papers from the side table.
• Turn in your Parent Letter or Getting
to Know to your period’s colored
drawer.
• Write down your HW in your Agenda!!! 
• Get out your Directed Reading &
Checking Pen
SI Measurements
(also known as “metric system”)
• “SI” stands for “System
International” or “International
System of Measurement”
SI Measurements
(also known as “metric system”)
• What about it?
– Common Language for scientists
– Based on units of 10
– Multiply or divide to go up or down when
converting units
– Prefixes determine “how much” of a unit
SI Measurements
(also known as “metric system”)
Important BASE units to remember:
METERS = m (measures distance or
length)
• Measure with ruler/meterstick
LITERS = L (measures volume — how
much space something takes up)
• Measure with graduated
cylinder/beaker
• Or with a ruler (length x height x
width)
GRAMS = g (measures mass)
• Measure with triple beam balance/scale
oCELSIUS
= oC (measures temperature)
• Measure with thermometer
Important PREFIXES to remember:
k = kilo- (means “1000”)
h = hecto-(means “100”)
D (da) = deca-(means “10”)
BASE UNIT (liter, meter, gram)
d = deci-(means “1/10” or 0.1)
c = centi- (means “1/100” or .01)
m = milli- (means “1/1000” or .001)
How to Measure
AREA = length X width
• Units: Squared Units
• Examples: m2, cm2, km2
How to Measure
MASS: measure of the amount of matter in
an object
• Use a Triple Beam Balance to add the
ones, tens, and hundreds grams units
** Triple Beam Balance Practice Sheet**
How to Measure
VOLUME: how much space a
3-D object takes up
• Units for liquids:
Liters/mL
• Units for solids: cm3
** Graduated Cylinder
Practice Sheet**
How to Measure
DENSITY = amount of matter in a given
volume
• Density = mass
volume
• Units: g/mL OR g/cm3