Transcript Measurement - Plattsbugh City School District

Measurement
• The tools of a Physical Scientist
– Stopwatch
– Scale or balance
– Graduated cylinders
– Meter stick
SI- International System of Measures
* Commonly referred to as the Metric System
* System of measurement using the decimal system
(based on units of ten)
Metric equivalencies:
1 meter = 1.09 yards
1 gram = 0.04 oz (about the mass of a dime)
1 liter = 1.06 quarts
5 Types of Measurements:
1. Length- measures the distance between two points.
Metric unit: meter
Instrument: meter stick
2. Volume- measures the amount of space an object takes up.
Metric unit: liter
Instrument: graduated cylinder
3. Mass- measures the amount of material in an object.
Metric unit: gram
Instrument: triple beam balance
4. Temperature- measures the amount of heat energy in an object.
Metric unit: Celsius
Instrument: thermometer
5. Time- measures the period between two events.
Metric unit: second
Instrument: clock
Measuring Length
A=
6 mm = 0.6 cm
B = 1.2 cm
C = 2.2 cm
D = 3.7 cm
E = 5.6 cm
F = 6.7 cm
G = 7.5 cm
The distance between point B and C:
10 mm
or
1 cm
Metric Conversions
* Units change by a factor of 10 at each step
kilo1000
King
100
hectoHenry
10
dekaDoesn’t
1
[Usually] [unit]
deciDrink
Chocolate
Milk
0.1
centi-
0.01
mili-
0.001
1 kilometer = 10 hectometers = 100 dekameters = 1000 meters = 10 000 decimeters =
100 000 centimeters = 1 000 000 millimeters
Convert 12.54 km to cm
Answer:
12.54 km = 1 254 000 cm
Convert 457 mL to hL
Answer:
457 mL = 0.00457 hL
Metric Abbreviations
K = kilo
H= hecto
Da= deka
D= deci
C= centi
M= milli
g= gram
m= meter
l = liter