Measurement Flashcards
(27 cards)
Science of Measurement
Metrology
International System
Systeme International
Cgs
Centimeter-gram-second
Dimension and unit difference
Dimension has no numerical value meanwhile unit has a numerical value
The Dimension of the SI System
Length
Mass
Volume
Meter
Kilogram
Liter
The Dimension of the Metric System
Length
Mass
Volume
Centimeter
Gram
Milliliter
Mass and weight difference
Mass is the amount of matter while weight is how the force of gravity acts upon
that mass.
instrument you will use most often
to measure mass is the ___________
Triple beam balance
In a triple beam, the Back beam
has a 100 g scale with a 10 g rider beam
In a triple beam, the Middle beam
has a 500 g scale with a 100 g rider beam
In a triple beam, the front beam
has a 10 g scale with a 0.1 g rider beam
In a triple beam, the rider
is the one that can be moved
In a triple beam, the beams
hold the riders
What to do first in a digital balance
the container must be placed first then press the tare button for the instrument to automatically deduct its weight.
What is volume
It is a measure of space
Uses L or mL
Instruments used to measure volume are normally
Graduated cylinders, Erlenmeyer flask, beaker
Graduated cylinders have a unit of
mL
The liquid will tend to curve downward. This curve is called the
meniscus
For clear liquid read the measurement in the
bottom of the meniscus
For dark colores liquid read the measurement in the
top of the meniscus
To know the increments of a Graduated cylinder
Subtract two adjacent measurements then divide by the total interval
Parallax error
happens when the angle of your eye is not the same as the measurement marking
Length is measured to identify
The size of an object
Triple Beam Balance measures in
Grams
