Environmental Engineering Reference
In-Depth Information
-sum (
pi
ยท
ln pi
).
H
represents the Shannon-Weiner Index,
pi
is the ratio of the number of organisms of a par-
ticular species to the total number of organisms, and
ln pi
is the natural log of
pi
. Traps may include fall traps,
sticky paper, or bait traps like tuna or sugar.
Composting with Worms
Students can complete this lab at home or in the classroom. Students monitor the results of their composting on
a weekly basis, keeping track of how much biomass they add by weight (wet weight) and the type of biomass.
Students then collect the compost, analyze it for nutrient content, and develop a procedure to test it using grow-
ing plants.
Coriolis Effect
This simple activity requires a lazy Susan, three pieces of paper cut into the shape of the lazy Susan's circle,
and markers. Mark the center of each paper. Set the first sheet of paper on the lazy Susan and draw a line from
the center to the edge. Rotate the paper one-third turn and draw another line from the center to the edge. Rotate
one-third turn and draw a final line from the center to the edge. Because the lazy Susan is not moving, there
will be three straight lines (as shown in Figure C-1). Label the paper "No Earth rotation."
Figure C-1:
No Earth rotation.
Now, place a second piece of paper on the lazy Susan and, this time, rotate the platter counter-clockwise. Draw
three lines from the center while the platter is moving. The lines will come out curved as you draw the lines on
the paper (see
Figure C-2
). Label this paper "Earth rotation Northern Hemisphere." Repeat this procedure, ex-
cept rotate the lazy Susan clockwise (see
Figure C-3
). Label this paper "Earth rotation Southern Hemisphere."
Figure C-2:
Earth rotation Northern Hemisphere.
