## EMILY'S BLOG

### I never dreamed about success. I worked for it. -Estee Lauder

#### Category: I am a Researcher

On March 7, last Thursday, we went to the Wenyu River again for our March data collection. The data collection process was very efficient and smooth, and my group was finished very quickly without running into any. technology related issues. But I did almost fall into the river (hence the photo below) and in the process of saving me and my phone, I snapped our thermometer in half. We were able to collect similar numbers compared to November, which were also positive numbers in the “teens”. We think that we had different results each month because we weren’t consistent with what device we were using, LabQuest or computer. But now, we thinks that LabQuest works best, and specifically plugging the probe into the second outlet.

For the first site, the amount of dissolved oxygen in the river was 13.57 mg/L, and the temperature was 9.5 degrees Celsius. Site #2 had 15.09 mg/L of dissolved oxygen, and the temperature was 10 degrees Celsius. The third site had 14.82 mg/L of dissolved oxygen and was 11 degrees Celsius. If we compare it to the November data collection that had similar results, you can see that the data table shows the temperature is warmer by an average of about 3 degrees Celsius in March. The dissolved oxygen has also increased by an average of about 1 mg/L. Something I’m wondering about is does the temperature have anything to do with the dissolved oxygen? When the temperature increases, does the amount of dissolved oxygen in the river increase as well? I’m wondering this because when the temperature from November to March increased, so did the amount of dissolved oxygen.

Today, we went to the Wenyu River for the January data collection. This time, we had no problems with our LabQuest, and we were able to collect the data we needed very quickly and efficiently. This time, our data was somewhat unusual, because all the data points were exactly the same in all three locations. The temperature of all three locations is 5 degrees Celsius, and the dissolved oxygen in all three locations is -0.34 mg/L.

The previous data we collected fordissolved oxygen in November was around 13 mg/L, and in October it was around 0.304 mg/L. Our data doesn’t really make sense, so we can’t find any trends our patterns so far. We think the reason we are getting numbers that are so different is because sometimes we are using LabQuest, and others we are using LoggerPro on a computer. Next time we collect data, we will try using both devices, to see the difference in the data we are collecting.

For the Eggs in Corn Syrup and Water experiment, we first put an egg into vinegar to get rid of the shell. We then put each egg into water or corn syrup, and the eggs would shrink or expand. Below are some pictures of my investigative design, data table, and initial and final models from this experiment.

For my investigative design, my design can be repeated by others because it is clear what components like the independent and dependent variable is, and my procedure is clear and detailed. Something that might have been an issue is that we couldn’t soak the eggs for exactly 24 hours, because there isn’t always exactly 24 hours between classes. Something that I could improve on is for the procedure is that I shouldn’t write in third person view. I have also collected additional information by putting the egg that had already shrank from the corn syrup into water, and vice versa.

In my initial model, I showed how I thought the phenomenon worked in the beginning. I had thought that the corn syrup somehow sucks the air out of the egg, so it shrinks and deflates. I also thought that when the egg is soaked in water, the water would go inside the egg, causing it to expand and grow. This was partly correct because water particles are small enough to go inside the egg.

Now, I know that water particles are small enough to be able to pass in and out of the egg membrane, but sugar particles are too big to do that. So that’s why when put in corn syrup, the water particles from the egg move out of the egg, and the sugar particles stay out, and the egg shrinks. And when put into water, the water particles all move into the egg, and the egg grows.

From the data I collected, I found that mass of the egg increased by 18.17 grams when put into water. This evidence shows that the egg has increased in mass when put into water. When put into corn syrup, the mass of the egg decreased by 32.21 grams, which shows that the mass of an egg decreases when put into corn syrup.

The purpose of conducting this experiment was to learn about cells, but replacing a cell with the egg. We were able to learn a lot about cells, and about how particles can pass through the cell membrane. Overall, this was a very fun experiment, and I learned a lot doing this.

Investigative Design

Initial Model

Final Model

Procedure and Data Table

Below is the Tinkercad design for our group’s (Samantha and Victoria) house in the future. Our Tinkercad design isn’t
completely finished as we still have small details to do like the pillows or some furniture pieces, but we have the house structure laid out.

I’m happy with how our design turned out, and I like how everyone has something they want part of the group design. I also like how we each get our own “corner” in the space, and we can personalize it however we want to.

One thing I think I did well as a collaborator is I shared my ideas, but I also listened to my teammates’ ideas, and accepted them. I also compromised on some ideas, and I worked collaboratively with others.  As a group, we all worked well together, and communicated and collaborated with each other. We respected everyone’s opinion, and discussed when there was something we didn’t agree on.

Something that I feel like we could work on or had some challenges while working together is finding time to work together
outside of classes to get work done, and communicating with each other outside of class.

Overall, I’m happy with how the design turned out, and I’m looking forward to continuing to improve our design and then 3D printing it.

Today, we went to the Wenyu River for our November data collection. The data collection process was different this time, because we found out that fences were put up, so we weren’t able to collect data from our original Sites 1 and 2.  To fix the problem, our group decided to change our first two Sites to be further down the river and closer to Site 3, so it would be outside the fence where we could access it.

This time, the LabQuest program worked really well, and we didn’t need to use our computers. We were much more efficient than before, as the process of collecting data was much faster.

Below is a picture of our data table with the data that we collected in units of mg/L. Compared to last time, the amount in dissolved oxygen in the river has increased by a lot.
The data of dissolved oxygen from October was around 0.3 mg/L, and this time we collected
data around 13.0 mg/L. I suspect the data we collected from last time was wrong, since there’s such a big difference in only one month.

The temperature of the river from last time was about 14 degrees Celsius, and this time it has gotten colder, so the water temperature was around 7 degrees Celsius. I also notice that Site 3 always had the coldest temperature, 13 degrees Celsius in October and 6 degrees Celsius in November.

A wonder I have is, will the amount of dissolved oxygen for next time go up or down?

Today, we went to the Wenyu River for our second Data Collection. But for our group, this is our first data collection process because last time due to technical difficulties, we weren’t able to collect complete data. This time, we were able to collect data from all three of our sites. Here is the data that we collected from today:

A wondering I have for next time is: Because there are very small differences of the data in different locations, I wonder if it will change more drastically when it gets colder.

Out of the 5 areas, I feel the strongest in communication because I feel like I am able to express myself and my thinking while being respectful to other’s and their opinions, and responding to other people’s comments. Something I think that I could improve on is my thinking, and to be more open-minded and flexible.