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Preparation InstructionsMaterials:
-2 pkgs White Cake Mixes
-1 pkg Chocolate Frosting
-1 Rectangular Foil Baking Pan
-Food Coloring
-Toothpick (or Tube Icing)
Directions:
Make a layer cake with at least three layers of colored batter. Mix 2 cake mixes
together. Take approximately 1/3 of the batter and set aside. Take the
remaining 2/3 of the batter and divide in 3 or 4 (depending on number of colors
used) small bowls to color. Add a different food coloring to each bowl so that
the color will show up in the batter. Layer all of the colors of batter together in a
baking pan. Use different patterns and thickness for different layers. Also, leave
some parts colorless.
Baking time and temperature will have to be estimated depending on cake
mixes used. Temperature should be 25 degrees lower than directions on the
mixes and time will probably be 10-20 minutes longer since you are using two
mixes. Check the center of the cake with a toothpick for doneness to be sure.
Toothpick should be clean and the cake should have its sides just pulling away
from the pan. Once the cake is cooled, frost the cake in the pan to make sure
all of the cake and colors are covered by the icing.
With a toothpick or with the tube icing, make a grid on the cake and indicate
which direction is north. This can be done immediately before the activity is
started in the classroom. Students will know where their sample is from by
referring to the grid on the cake.
From: http://oceandrilling.coe.tamu.edu/curriculum/Sediments/activity2.htm