Activity 29: Negative Feedback Mechanism

Our First Lab Experiment!

        We have conducted an experiment in which we have related our bodies' hormone levels with ice cubes and heat. I had a fun time doing this activity. We observed the temperature of the water per minute and we added more ice cubes as the time went by. In the end, we all drew diagrams and filled out tables about our observation. All in all, I had a good time performing the experiment with my group mates.  

                                                        PALOMARA

We melted ice and took it's temperature. At first we placed one ice cube, then two, and then three. We took it's temperature every time we placed a new batch of ice cubes. The experiment was interesting because it somehow relates to how hormones react. The activity was quite simple to do but you do need the proper materials to do it.

OASAN

The experiment we did last week was amazing. The things we did and the things were learned were very fun and interesting. I didn't realize that the experiment we did was actually connected to us and our hormones. The experiment actually had me baffled. Instead of melting the ice, the water just got colder. Even with fire! The members and I had fun doing it and we'd like to do it again someday.

MARIANO

The experiment that we did was pretty exciting and fun because what we did was put ice cubes in boiling water and observed if the temperature was going high or low. Which the temperature almost stayed the same. What I learned from this experiment is that when we put too much ice cubes in boiling water, it will take a lot of time for the water to boil and it will get much colder. This experience was amazing and I'm looking forward on trying it again in the future.

SALCEDO

During the experiment it was interesting for me how the temperature became steady after a while. At first the temperature rose when there was only 1 ice cube placed in the beaker. Meaning the fire can still change the temperature more than the single ice cube can. But when more ice cubes were placed in the beaker, the temperature went lower. This is when it became interesting. The ice cubes started to dominate the temperature and after a few more minutes the temperature became colder.

GERONIMO