Introductory Rock Layer Cake

Procedure:
  1. Remember to spray the bundt pan with oil or butter and flour according to package directions
  2. Prepare the cake batter according to package directions
  3. Divide batter into 4 bowls
  4. Add green food coloring to one bowl of batter
  5. Add blue batter to another bowl
  6. Add red food coloring to the third bowl
  7. Leave the 4 th batter uncolored
  8. Pour the uncolored batter into the bundt pan
  9. Pour the green Batter on top of the uncolored batter
  10. Pour the red layer in the pan
  11. Add poppy seeds to the blue batter and pour it into the pan
  12. In two or three places squeeze 3 or 4 drops of red food coloring
  13. Plunge a knife in out of the drops of food dye to force it through the colored layers
  14. Bake , cool and unmold the bundt cake according to the package directions
  15. When cooled mix the half of the confectioner's sugar with the cocoa ( Cocoa is optional)
  16. Sprinkle white sugar on top of half the cake and the other half with the sugar and cocoa mix
  17. Mark coordinates in the sugar N=north E=east S=south and W=west
  18. Have students draw and describe the cake
  19. Give each student or lab group a rock layer key
  20. Firmly push a straw into the cake and extract a small tube of cake- make sure each student knows where their slice came from (N,E,S or W)
  21. Observe the layers through a clear straw or carefully push the tube of cake out with a Bamboo skewer
  22. Draw and describe your sample of cake
  23. Identify rock types of each layer, intrusions and fossils using the key
  24. Label your cake sample diagram top to bottom
  25. Compare your sample with samples from the other 3 coordinates
  26. Cut a slice of cake Draw and describe the full slice
  27. Compare the interior of the cake to your core samples
  28. Enjoy eating your cake
Step 10: Pour red layer in pan Step 12: Add drops of food coloring  
  Step 21: Observe Layers Step 27: Compare interior of cake

Cake core samples-left- strata in clear straw- middle- straw and skewer - right- cake pushed out of the end of the straw. Interior of the cake looks swirled not in layers.

 


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