Reading a graduated cylinder
and a triple beam balance!
Ms. Trahan
Reading a Graduated Cylinders
Graduated cylinders measure volume.
Volume- the amount of space that a substance or object
occupies.
Units for volume are mL.
Reading a Graduated Cylinders
When reading a graduated cylinder at eye level, not above or
below. Make sure to read the meniscus.
Meniscus-The curved surface of the liquid.
Reading a Graduated Cylinders
Steps to finding the scale
-Subtract the numbers on any two long lines that are
next to each other. Subtract these numbers.
Example: 250 mL and 200 mL means subtracting 250 – 200
and getting 50 mL
- Count the number of spaces between the two long
Lines. (The example to the left has ten)
- Divide the number you got in the first step (50 mL)
by the number of lines you counted in step 2 (10).
50/10= 5
Reading a triple beam balance
Triple beam balances measure mass.
Mass- a measure of the amount of matter in an object. Mass
is usually measured in grams (g) or kilograms (kg).
Triple beam balances measure in grams.
Reading a triple beam balance
First zero out the scale. The pointer should be at 0. Turn
the “Zero Adjust Knob” until the the line is at 0.
Reading a triple beam balance
Put the object on the pan and the arrow should move above
zero. Move the the middle slider first, then the back then
the front. Next add all the slide numbers together. If the
arrow ever falls below zero move the slide back one.
Reading a triple beam balance
Here is an example of a triple beam balance that has the
measurement you need. Let’s add the slides together.
The largest is at 100, the back is at 10 and the front is at
.1. We will add these together and get 110.1g.