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How Does Acid Rain Affect Plants?
by Mrs. Smith's Third Grade Class
* Hypothesis * Abstract * Materials * Procedure * Results * Conclusion * Bibliography & Links * 
 
Hypothesis 
We think that the plant watered with the acid rain will not grow as well as the plant watered with distilled water. 
 
Abstract 
 Earlier in the year we did an experiment to determine the effect of acid rain on limestone buildings.  We used chalk to represent the buildings.  Distilled water was sprayed on one piece of chalk while a solution of one part distilled water and one part vinegar was sprayed on another piece of chalk.  The results were astonishing!  The chalk sprayed with the acid rain ( one part distilled water and one part vinegar) dissolved and ended up an ugly lump on the bottom of the glass.  We wondered what the effect of acid rain would have on plants.   
 To prepare for the experiment we purchased two similar plants.  Both were pathos plants.  We placed both the same distance from the window and gave each the same amount of liquid.  One was sprayed with distilled water while the other was sprayed with the acid rain solution.  Pictures were  taken twice a week usually on Mondayís and Fridayís 
 Very quickly we observed differences between the two plants.  The one sprayed with distilled water continued to grow.  It stayed green.  The one sprayed with the acid rain solution started to droop.  Some of its leaves turned yellow.  Later they got black spots.  Eventually, the leaves were all collapsed and leaned on the table top.  We concluded that acid rain was not good for plants.   
 
Materials   
  • two similar sized pathos plants
  • two spray bottles
  • distilled water
  • vinegar
  • camera
Procedure   

1. Two similar sized pathos plants were purchased. 
2. Both were placed the same distance from the window. 
3. Both plants received the same amount of liquid. 
4. One plant was watered with a mixture of one part distilled water and one part  vinegar to represent acid rain. 
5. The other plant was watered with distilled water. 
6. Photographs were taken twice a week.
Results   
When the plants were purchased they were the same size measuring ten inches each.  By the second week the distilled water plant measured ten and one fourth inches while the acid rain plant only measured eight and one half inches.  A few of the leaves started to turn yellow.  By the third week the distilled water plant measured ten and one half inches while the acid rain plant measured only six inches.  Its leaves drooped down.  More leaves were yellow and black spots appeared on several.  By the fourth week the distilled water plant measured ten and one half inches while the acid rain plant measured only four and a half inches.  It looked lifeless. 

 
Week 1 

 
Week 2 

 
 Week 3 

 
Week 4 
 
 

Conclusion 
We found that the plant that received the distilled water grew normally.  The plant watered with acid rain didnít continue to grow.  Acid rain is not good for plants. 
Bibliography & Links   
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Student sNames:  Dredia A., Andre B., Sonya B., Bretton C., JordanC., Daniel D., Raymond G., Donovan G., Samantha H., Erik H., Lacey J., Micah K., Kimberly K., Kamarie L., Azhar M., Melisa M., James O., Benjamin R., Jonathan W., Shane W.
Timber Ridge Magnet School