| Explore | Wade: On thing that I learned about seed germination is that gravitropism is the sense that plants have that allows them to know which way is up or down no matter what way that they are planted. Ezra: One thing that I learned about soybeans, the plants that we will be using for our experiment, is that they germinate in about 2 days. We will be looking for that in our experiment. |
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| Research Question | What will happen if we water our plant with the incorrect amount of water? Will more water kill our plant? Will less water make it grow shorter? |
| Predictions | Our hypothesis is: If we water our soybean plant more, then we think that it will not kill it, but it will be less healthy than our control experiment, with the right amount of water. However, we do think that less water than it needs will kill it. We think this because a lot of the websites that we have looked at say that too. |
| Experimental Design | Our independent variable is the amount of water. What we will be measuring, the dependent variable is how much it grows, and how fast. Our procedure is as follows: Day one 1 Observe the unsoaked seeds and take photos 2 Collect 5 Petri dishes and label (1-5) 3 Cut 5 paper towel circles and place in the Petri dishes. 4 Prepare the amounts of water for each dish. Dish 1=635mm. Dish 2= 1.27mm. Dish 3=2.54 mm. Dish 4=381 mm. Dish 5=508mm. 5 Match the amounts of water to the correct dish which it corresponds to. 6 Soak the water into the paper towel. 7 Place the soybean into the petri dish 8 Place petri dishes by the window Daily 1 Draw a sketch or take a picture of the seed 2 write any observations that you have 3 Add the same amount of water as the day before 4Place Petri dishes by the window Materials: -Soybeans -Petri Dishes -Paper (will be cut into circles by ourselves) -Water -Water measure |
| Conclusion | We learned that the amounts of water that soybeans need change when you go from soil to paper towel. We also learned that a seed needs to take in about 50% of its weight in water before it can begin breaking through the seed coat. But overall, we learned that when soybeans don’t get enough water, they can germinate, and when they get too much water, it is harder for them to germinate and do well in the photosynthesis process. |
| Investigation Theme | WOS |
| Grade Level | Middle School Students (grades 6,7,8) |
| School Name | San Francisco Friends School |
| Session | Spring 2019 |