The hypothesis is that sunflower plants will grow best at pH levels between 5.5-7.5.

You will prepare 5 pots with the same amount of soil, place sunflower seeds in each pot, and label them A, B, C, D, and E. You will fill 5 beakers with 200 ml of rain water and add sulfuric acid to each beaker until the pH levels are 6.0, 5.0, 4.0, 3.0, and 2.0. You will water the sunflower plants twice a day with the water from each beaker and measure the average height of the plants every 2 days.

You will need 1 packet of sunflower seeds, 5 pots, soil, 1 bottle of sulfuric acid, 1 bucket of rain water, 5 beakers, pH/litmus paper, and a ruler.

The results showed that the sunflower plants in pots A (pH 6) and B (pH 5) demonstrated normal growth. The sunflower plants in pot C (pH 4) demonstrated stunted growth. The seeds in pots D (pH 3) and E (pH 2) did not germinate.

This science project is interesting because it shows how acid rain can have a negative effect on the growth of plants. It also demonstrates how acid rain can travel long distances and affect areas far away from the source of the pollution.

Variations of this experiment could include testing different acids like hydrochloric or nitric acid, or comparing the growth of different types of plants which may be more tolerant or less tolerant towards lower pH levels.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!