dlbhssandboposfall2023 project 3
- Project reviewer
Joined 04 Sep 2023
Project by group dlbhssandboposfall2023
Info
| Explore | We have grown gardens before and understand the importance of taking care of plants, like watering them and giving them light. We didn't know much about cellular respiration before our work in class, like how photosynthesis doesn't always need to take place for cellular respiration. Why do some... |
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| Research Question | We wanted to test how carbonated affected photosynthesis in an elodea plant. We wanted to see how the color of BTB would change. We thought that since carbon dioxide is so important to photosynthesis, using carbonated water would have a big impact. |
| Predictions | Our predicted outcome was that there would be an excess of CO2 in the water, and that the BTB would not turn blue. We thought this because we knew there would be a lot of CO2, and our hypothesis was supported by our findings. |
| Experimental Design | Two tubes with elodea plants, 1 with distilled water and 1 with (club soda) carbonated water Two tubes without plants, 1 with distilled and 1 with carbonated (club soda) water Label each tube Each tube gets 18mL of their designated water type Each tube gets 1mL of BTB Put foil over every... |
| Conclusion | The experiment supported the hypothesis. The tube was a different color of yellow after 48 hours, showing that there was a change. The water was still yellow, showing that there might have been an excess of CO2. |
| About this Project | I feel that the planning that Project 3 (Garden Badger) did for this session showed good reasoning skills. I liked that they went a step further to determine whether/how what they were investigating actually affected the experimental condition without plants to provide a point of comparison. This... |
Updates
Thank you for your help with all of our experiments! We hope everything is well. We really enjoyed doing this. -Team 3
Hi Garden Badger!
I just wanted to let you know that I am in the middle of a family emergency (I have told Mrs. Sandbo about this) so I will look at your file and get back to you as soon as I am able.
It was really great working with all of you this fall session!
Renate :)
Hi Sunflower!
Glad to know it's going well. Just report whatever data you have. Looking forward to it!
Renate :)
It is going well, we decided to continue it for another day, so hopefully we can give you our findings tomorrow. Unfortunately, we don't have the data from yesterday, but we took a picture so we should be able to check when the rest of the team comes back.
Hi Team 3!
Thanks for the Thanksgiving wishes! I hope you had a nice holiday as well.
Thanks for clarifying the source of the water you will use in the experiment. It seems like just a simple fact, but it really does matter.
How is your experiment going? Looking forward to any updates!
Best Wishes,
Renate
Hello! We are going to use distilled water just as we did in the elodea experiments we did in class. We've written our hypothesis for our own experiment: If we use carbonated water instead of normal water with our BTB to track CO2 levels of an elodea plant, then there will be an excess of CO2, and the BTB color will remain a bit green. We'd appreciate any feedback. Happy Thanksgiving! -Team 3
Hello Again Garden Badger!
Looks good- I really like your 'no plant' controls you have added to the experiment, especially in using them to investigate how carbonated water itself may be having an effect! Like I said, I think you're onto something.
For the 'normal' water, are you using tap water or something else? The reason I ask is because you would want to choose water that is 'normal' for Elodea, and not something that could affect its growth or cause it to be stressed.
As you now know a lot of work goes into thinking about an experiment, and choosing an appropriate control is one of those things that are important, but can be overlooked (even by scientists!). It is important to just make sure that the control is not also producing an effect. I assume you are just using the water from where the Elodea is stored in your classroom, but stating this is also important.
Great work so far- I am excited about this project! :)
Best Wishes,
Renate
Here is our revised plan. We hope that this may clear a few things up for both you and us.
RESEARCH QUESTION: How does carbonated water affect photosynthesis in an elodea plant compared to normal water?
HOW THIS RELATES TO PHOTOSYNTHESIS and/or CELLULAR RESPIRATION: Seeing how carbonated water affects photosynthesis
INDEPENDENT VARIABLE: Carbonated water
CONTROL: normal water
DEPENDENT VARIABLE: (what will we measure to answer our research question?) how photosynthesis is affected by the type of water
PLAN FOR OUR EXPERIMENT: 4 tubes, 2 with plants and 2 without. For each set up (plants or no plants), there will be a tube with normal water and one with carbonated water. We will have 2 with no plants so we can see how the carbonated water affects the BTB reactions. Then the ones with plants will show how the water affects photosynthesis.
Hi Garden Badger!
Thanks for sharing your experimental proposal. I think it is very interesting! I have a couple of questions that will hopefully help you continue thinking productively about your project.
What made you choose carbonated versus un-carbonated water for this experiment? How could these different types of water affect photosynthesis?
I think that as long as you have a clear rationale for choosing the carbonated versus uncarbonated water (which I think you do- I just want to know how you are thinking about this) this is a great experiment!
One thing to keep in mind is that the carbonation is not the only difference between the carbonated and un-carbonated water. When water is carbonated, it changes other properties of the water other than just the CO2 content. If you can, do a little background research on this. Note: I am mentioning this not because I think you should change your experiment, but only so that you can be aware of some things that could affect the outcome, even if there isn't much you can do about it. Doing this helps you begin thinking like a scientist! :)
I can't wait to see how you progress with this project!
Best Wishes,
Renate
We propose an experiment using carbonated water for a radish plant, and see how it affects the process of photosynthesis. We will use sparkling water as our independent variable and normal water as a control. We are putting it in the light. The dependent variable we are measuring is how the process of photosynthesis differs between different types of water. We'll make two radish planters with radishes, put them both in the light, and water one with sparkling water and one with normal water. We appreciate any feedback! -Team 3
Hello! This group worked on the attached proposal during class today, but the bell rang before they could type up their ideas and submit. They gave me permission to upload a photo of their work today. They welcome your feedback and will continue their work Monday when they are back in school.
Hi Sunflower and Team 3,
Thanks for the update! I am glad that you were able to determine that your result was unexpected, and that now you can try again. And if you're worried about unexpected results, don't be- this is a really common issue/occurrence in science. Solving for the unexpected is how we learn!
Looking forward to hearing more about your results and what you find out!
For your independent research project, please let me know if you have any questions or if I can be of help.
Best Wishes,
Renate
We decided to do a redo for the elodea experiment, because we got an unexpected result. We used distilled water instead of spring water this time, and smaller test tubes, and we immediately saw a difference. We'll keep you updated! -Team 3
Hello team! Thanks for letting me help out by uploading your project summary!
Dear Lily, Badger, and Sunflower,
Good work. Was there anything about the leaf disk experiments that surprised you? How did you show your data (e.g. graphs, etc.)?
Until later,
Renate