shszemcikfall2017 project 6

Project by group shszemcikfall2017

Info

Explore Work on this next!
What do we know about plants from our experiences outside of school? What have we discovered in class and background research? What questions about plants interest us?
Research Question What do we want to test or study? How did we come up with the question(s). How does the question fit what we know about the topic?
Predictions What are the possible outcomes of our study given the variables we are working with? What is our explanation for why and how we think this will happen?
Experimental Design What is our plan? Be sure to include enough detail that another group can replicate our experiment. What variables will we test? What variables will we measure and observe? What variables will we keep constant? How will we record our data?
Conclusion What claim can we make from our experiment? What are possible explanations for our results? How do the data we collected and our reasoning with scientific ideas support our claim? What future experiments could be done to expand on the results of this experiment?
Investigation Themes
Class Level

Updates

Get to know your team’s scientist mentor, who will encourage and guide you through the scientific process of discovery. The more you share your ideas and research info, the more your mentor can help. You may also hear from a scientist mentor liaison who will be helping all the teams in your class.
PlantingScience Staff
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PlantingScience Staff
updated the project info
PlantingScience Staff
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marielena
said

Thanks for helping us with this project, we appreciate it and will try to answer your questions on the presentation soon. 

marielena
said

That's really cool :)

Joanne Dannenhoffer
said

You're welcome, it's fun to see what you are doing. Let me know if you need more help.  

hallev
said

Thank you for helping us with this project!

kelly
said

To get co2 into the cup we blew in for 60 minutes each of the same person because different levels of co2 in each person 

kelly
said

Hi i would just like to say thank you for helping us with our project. Thank u for taking ur time out of ur day to help us understand more about science and have more fun with it. 

 

Joanne Dannenhoffer
said

Hi team, 

I liked your presentation and I have some questions for you.   Asking and answering questions is how science works!   I look forward to seeing your answers. 

Joanne Dannenhoffer
uploaded Comments from Joanne.pdf in project files
Joanne Dannenhoffer
uploaded Comments from Joanne.pdf in project files
Joanne Dannenhoffer
uploaded Comments from Joanne.pdf in project files
Joanne Dannenhoffer
uploaded Joannes comments.pdf in project files
Joanne Dannenhoffer
said

Sounds like you got some good results. I look forward to seeing the presentation.  At 1% salt, was the rate slightly higher than the 10% salt rate or the water rate? 

Sometimes the leaves don't like to sink at the beginning.  If while you still have your thumb on the syringe after you pull on the syringe to create a vacuum, you push on the syringe to push the solution into the leaf before you take your thumb off, the leaves sink better.

I did not know I wanted to be a scientist until college.  When I was young, I liked learning new things and spending time in the woods.  In high school biology I found I was fascinated by how living organisms work and became a biology major in college.  Then in college, I was asked to be a teaching assistant in a plant biology laboratory and found I really enjoyed helping students learn.  Being a college professor lets me do both things, be a scientist and study how plants do the things they do and teach others to appreciate plants too!  

Barbara A Zemcik
uploaded What is the effect of salt water on photosynthesis-.pdf in project files
marielena
said

We had to do a presentation on the lab we created, specifically how salt water would effect photosynthesis. Our results were it had a negative effect and our teacher's going to upload the presentations soon.

marielena
said

Did you knew all along you wanted to be a scientist?

marielena
said

I forgot we added baking soda to the leaf disks for the light and dark lab. For the salt water lab, the highest percentage, specifically 10%, there was less photosynthesis. With the lowest percentage of 1%, there was a slight higher rate of photosynthesis. With the leaves in the water, they started to float quickly around 3 minutes. I'm pretty sure we had an error for the 5% solution. The leaves immediately rose, so it wasn't properly deoxidized. Also, the leaves weren't going all the way down for one solution.

Joanne Dannenhoffer
said

Could you also tell me exactly what the results were of the different percentages of salt and water?

Joanne Dannenhoffer
said

If you only have water in your cup, how is your plant getting carbon dioxide?  This is important.  Are you sure there is no baking soda? How are you supplying carbon dioxide to your plants?

Since your plant needs water, carbon dioxide and light for photosynthesis  if you add salt, you should think about what change that is making on the water? or carbon dioxide? or sunlight?  

 

marielena
said

We're created a lab for our team and we chose the effect of salt water on photosynthesis. We had four cups, three of salt and one with 60 ml distilled water. We had percentages of 1, 5, and 10 for the salt solution. I'm confused on what the percentages indicate and I thought the lowest percentage of salt would have a positive impact on photosynthesis, because there's not a lot of salt and the water over powered it or something. There's more water in the leaf pores. I'm a little confused with this lab.

marielena
said

I think the solution was only water for the light and dark experiment. We put one of the leaf disks in light and the other one in the dark. We had 60 ml of water in each cup. 

Joanne Dannenhoffer
said

In your experiment, what solution was in your cup with the leaf disks?  Was it only water?  Think of photosynthesis as things that are needed: light, water and carbon dioxide.  How do you supply light? water? carbon dioxide?  If you use just water and salt water what is missing from both treatments?   Is it the same thing or something different?  If it is the same thing, will your experiment tell you anything?

PlantingScience Staff
said

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