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The Effects of Acid Rain on Sunflower Growth

CSEF · 2015 Environmental Science

Eric J. Longo · Los Cerritos Middle School, Thousand Oaks, Ventura County

Overview

Objectives/Goals The objective was to determine how acid rain affects sunflower growth, and how each pH level affects the plants differently. Methods/Materials Five different solutions of pH were poured into each pot with five separate beakers. The seeds were then watered and observed once a day for around thirty days. At around day thirty, the plants were then watered with the acid solutions directly on their leaves and stems with a strainer. Results The plants watered with a lower pH were affected more than the plants watered with a higher pH. The plants were affected below the ground on its roots which made the sunflowers less stable. The leaves became spotted and the stem could not stand up straight, which made the sunflowers less stable and weak. Conclusions/Discussion The acid burned and harmed the leaves, stems and roots. The lower pH levels had more acid than the higher pH levels, so the sunflowers were affected more.

Summary statement

This project was used to show the affects of air pollution and acid rain on plants.

Help received

My mother purchased the supplies and materials used in the project and my father helped supervise the pouring of the acid on the plants for safety reasons.

Competition history

  • CSEF 2015 Environmental Science · Entry J1117

Resources

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