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The Cackling Corn

Project by group nebuzzellspring2019

Explore We know that plants like trees change over different seasons. We also know that some plants die and some plants go into a type of hibernation in the winter. We discovered that plants germinate and need different things to grow. Some questions that interest us are how do seeds that are so small grow into plants that are so so big? How do plants grow without soil? Why do some seeds never grow? Will the size of the seed affect how big the plant will be? How will plants react to different types of bottled water? How will plants grow with different water temperatures? How long can a plant survive without water?
Research Question The research question we want to test is how plants react to different types of water. We knew that some types f bottled water had things added and we were wondering how these things will effect plant growth.
Predictions If we add swamp water the plant will grow faster because of all the nutrients. There is nutrients in swamp water because of all the plant material, sediment, and mud.
Experimental Design Research Question: How will different types of water affect plant growth? Prediction: If we add swamp water then the plant will grow faster because of all the nutrients. There is more nutrients in swamp water because of all the plant material, sediment, and mud. Materials: 8 pots Poland springs water Swamp Water Tap Water 8 cups of potting Mix 18 corn seeds Growing light Masking Tape Deionized water Safety: Don’t put anything in your mouth or eyes Wash hands Safety goggles Wear gloves when handling swamp water Be cautious Procedure: First we will take two planters for each of the three different types of water We will fill each planter up to the indent on the top of the pot with soil so that it is exactly the same amount of soil and not all the way to the brim of the pot so it doesn’t overflow with water or soil Then three corn seeds will be added to each of the 8 pots We will put the pots under the grow light The soil will be watered with the four waters once each day; tap, Poland Springs, swamp water, and deionized.
Conclusion I thought that if we watered the plants with swamp water, then they would grow the largest. I found out that deionized water makes corn plants grow the tallest, therefore my hypothesis was incorrect. My data showed that the corn plants grew faster with deionized water. For example, on April 11, the average height of the plants being watered with deionized water was 17.15 inches and the average height of the swamp water plants was only 14.4 inches. From April 10 to April 12, the deionized water plants were significantly taller than all the other plants. I think that the deionized water plants grew the largest because there is no salt in deionized water. I know that salt absorbs water and if the water is absorbed from the soil than plants won’t have as much water to use for growth. An error that occurred while doing this experiment was we didn’t measure the amount of water we gave to the plants. This would have affected the results because some of the plants could have been underwatered and some of the plants could have been overwatered. Another error that occurred is that some of our plants got accidentally ripped out of the pot while we were trying to measure them. This affects our data because it changes the average height of the plants in each pot. We could redo the experiment and use more types of water to see what other types of water do to the way plants grow. Another experiment we could do now is see how different amounts of salt affect growth in plants.
Investigation Theme WOS
Session Spring 2019
School Nottingham School
Student Level(s) Middle School Students (grades 6,7,8)