Effects+of+Acid+Rain+on+Plants,+Ada+and+Haley

We purchased six plants. Next we seperated the plants into three groups and labeled the pots in each group, "Crushed Limestone", "Pieces of Limestone", and "Control". For the "Crushed Limestone" group we placed 2 pieces of chalk which has traces of limestone in a ziplock bag and hammered the bag to crush the contents. Each "Crushed Limestone" plant contained 2 crushed pieces of chalk. For the "Pieces of Limestone" group we broke 2 pieces of chalk into 3 seperate pieces each. In each of the "Pieces of Limestone" plants we included six pieces of chalk. We distributed all of the chalk within the appropriate soil. Next we made our own acidic water using half a cap full of apple cider vinegar and a cup of water. Next we tested the acidity of the water by "cabbage test". We placed 4 cups of chopped cabbage into a cooking pot and added 2 cups of boiling water. We let the mixture stand for ten minutes for the color to leak out of the cabbage. Later we put 100 mL of cabbage juice and 75mL of acidic solution into a container and measured the pH level by checking a color grid for cabage pH levels online.We found that the pH was four and was that of average acid rain, we then watered each plant with 1/3 cup of acidic water. Every other day we watered each plant with 1/3 cup of acid water. After one week we measured the plants for damage by finding the square inches of each plant that became damged as an effect of the acidic water. At the end of week two, we collected data again by measuring the square inches of damage done to each plant. At the end of three weeks we collected data again, and averaged the amount of damage done to each group over the last three weeks. Next we expressed this data using a table.

Presence/Type of limestone || **DEPENDENT VARIABLE:** Plants || **Other Variables to hold Constant:** Light, amount of water, pH levels of water, amount of soil and type of soil || No limestone || **Level Of Ind. Variable:** Crushed limestone || **Level Of Ind. Variable:** Pieces of limestone || Two Plants || **Sample Size:** Two Plants || **Sample Size:** Two Plants ||
 * **INDEPENDENT VARIABLE:**
 * **Level Of Ind. Variable:**
 * **Sample Size:**

Percentage of Leaves with Brown Spots Limestone** || **Pieces of Limestone** || (Avg.) ||  ||   ||   || (Avg.) ||  ||   ||   || (Avg.) ||  ||   ||   || (Avg.) ||  ||   ||   ||
 * RESULTS**
 * || **Control** || **Crushed
 * **Week 1**
 * **Week 2**
 * **Week 3**
 * **TOTAL**

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