| Explore | Outside of school we have plants in our houses or outside. We water them and we give them sunlight when needed. In school we have learned that they need sunlight, water, and carbon dioxide to do Photosynthesis, we also learned about Cellular Respiration and the different organelles in plant and animal cells. Our questions are, how many plants are there and how different are they and how different are their needs. On a normal basis pea seeds usually take up to 7-14 days or 1-2 weeks to germinate. Pea seeds can go about 6-8 hours in shade a day or in partial shade and it won’t affect anything. The seeds (pea seeds) are big and hard and need to absorb the right amount of water before germinating. Lastly, pea seeds are a cooler temperature crop and it germinates the best in the right temperatures, however if it gets too cold then it could delay the germination of the seed. |
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| Research Question | How does the temperature of the water affect how fast the seed germinates. |
| Predictions | If we use different water temperatures on the plant then I don’t think it will affect how fast the seed germinates that much. I think this because plants have to adapt all over the world so I think the temperature might not matter but there is only one way to find out! |
| Experimental Design | First, get a bag and get a paper towel (10 drops of water on the towel) place 5 pea seeds in between the towel and put the towel in the bag. Leave it in a room with a window over night. The next day I (Sarah) Kenna, Danyela and Kendal will put 10 drops of cold water (refrigerate) , room temp water (just put it in the room for a little bit) and hot water (put in microwave for 30 seconds) in 3 different bags Each day apply the correct temperature of water to a paper towel until it is damp and transfer the seeds onto the new paper towel Measure the seed and which one is the largest and grew the fastest Keep repeating steps 4 and 5 |
| Conclusion | The temperature of the water does not affect the seed germination rate. The average length of the warm seeds in the end is 2.2 cm. The average length of the hot seeds in the end was 2.6 cm. That means that the average growth was only 0.4 cm more which means it doesn’t really affect the seeds. The temperature needed for seeds to germinate can be different depending on the seed. The temperature of the water doesn't matter so much as the temperature around the seed and of the soil. Mostly though you need to keep the seed evenly moist or it could rot. The pea seed does grow better with 40-80 degree water and when temperatures are between 68 and 86 degrees, however, pea seeds can’t germinate in temperatures below 28. Maybe next time we could do more precise measurements of water. |
| Investigation Theme | WOS |
| Teacher Name | Evelyn Gray |
| School Name | DeWitt Middle School |
| Session | Spring 2021 |