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Mr. Pumphrey and Mr. Drake
Period 1 Biology
Acid Rain Lab
Purpose: The purpose of this lab is to test the effects of acid rain on plant growth.
Research: Acid rain is caused by pollutants released into the air joining with water
vapor molecules in clouds. This rain then falls and has damaging effects on plants,
animals, and water and building sites.
The problems with acid rain result in the fact that it leads to unstable conditions for life.
Damage caused to plants can be reversible by changing the conditions in the soil, but
damage to buildings and roads can be much more difficult to fix.
Hypothesis: Acid rain will cause plants to grow slower and die quicker than plants
exposed to non-polluted rain.
Materials:
Cups
Rains Samples
Graduated cylinder
Rulers
Dirt
Beakers
Markers
Tape
Seeds
Droppers
Graph paper
Procedure: (Your procedure must be much more detailed than this).
1.
2.
3.
4.
5.
6.
Plant seeds in 2 dirt cups
Water seeds every day
Measure seed growth
Collect data
Chart data
Test hypothesis with data
Data:
The data shows that the seeds grown in the regular rain water grew to an average
height of 8 cm after ten days. The growth of plants in the cup with acid rain grew to an
average height of 3 cm. The plants in the normal rain cup appeared healthy and green.
The plants in the acid rain cup had shriveled leaves and brown spots along with stunted
growth.
Day 1:
Day 2:
Day 3:
Day 4:
No growth
No growth- added 10 ml of acid rain and 10 ml of regular rain
Seeds begin to sprout 10 ml of acid rain added 10 ml of regular rain added
Seeds have grown 2cm 10 ml of acid rain added 10 ml of regular rain added
***See data sheet/graph to view growth statistics or include data table and graph here.
Conclusions:
The hypothesis was supported by the data and the conclusion is that acid rain limits
plant growth and damages parts of plants when exposed to steady levels of acid rain.