PASCO ME-8569 DENSITY SET - Manual (Page 7)

scientific 3
012-04774A
Experiment #1: Length, Area, and Volume
OBJECT LENGTH AREA VOLUME DISPLACED VOLUME % DIFF.
AL. CYL.
AL. BLOCK
BRASS CYL.
BRASS BLOCK
PLASTIC
AL. IRREG.
SHAPE
Table 1.1: Length, Area, and Volume
REQUIRED EQUIPMENT:
Density set
Calipers (SF-8711)
String (SE-8050)
Overflow can (SE-8568)
Beaker for catching water
Graduated cylinder (50 ml)
PURPOSE:
The purpose of this experiment is to distinguish between
length, area, and volume.
PROCEDURE
I. LENGTH
Using the calipers, measure the longest side of each of the
five regularly-shaped objects. Record the results in Table
1.1.
II. AREA
A. Using the calipers, measure the diameter of each of the
three cylinders. Divide the diameter by two to get the
radius, r.
Calculate the area of the circular end of the cylinders using:
A =
π
r 2 .
Record the results in Table 1.1.
B. Using the calipers, measure the width and height of one
end of each of the blocks. Calculate the area of the end of
the block by multiplying the width by the height. Record the
results in Table 1.1.
III. VOLUME
A. By Calculation
For each of the regularly-shaped objects, calculate the
volume by multiplying the area of one end by the length of
the object. Record in Table 1.1.
B. By Displacement of Water
For each of the regularly-shaped objects, find the volume by
finding the volume of water that each one displaces:
1. Put the beaker under the overflow can spout as shown in
Figure 1.
2. Pour water into the overflow can until it overflows into
the beaker. Allow the water to stop overflowing on its own
and empty the beaker into the sink and return it to its
position under the overflow can spout without jarring the
overflow can.
3. Tie a string to each of the objects (including the
irregularly-shaped object).
4. Gently lower the first object into the overflow can until it
is completely submerged. Allow the water to stop overflow-
ing and then pour the water from the beaker into the gradu-
ated cylinder.