November 2016 archive

Currents From The Kitchen:

My prediction:

I think that the grape will produce the most electric voltage, because grapes  are acidic, so I think this factor will help add to the electric voltage, where as apples, are much less acidic than grapes.


Our Results:

Our results where that the grape was more successful creating a higher electric voltage than the apples. This may be because of the higher acidic level in grapes than in apples – like I mentioned in my prediction – giving off a higher electric voltage, helping to give more power. This is because, the charged particles from the acids, are the same as the charged ones in the electric current. So, this would be producing more electric current, this will make the battery more charged, while being more acidic at the same time.


So, we observed in this experiment, that the more acidic the fruit (the higher the pH levels) the more charged the battery will become. We also observed that different types of apples can have different electric voltages, because each different type or apples acidic levels (and pH levels) are slightly different than each other, and this affected the apples results. Where as we only had one grape, but did notice the different of the acidic levels of the three fruits.



Q: What type of circuit will produce electron flow in your fruit or vegtable?

A: Since, electrons do physically move when voltage is applied, – because, they are charge carriers to be used to transmit electromotive force (the electric voltage) – they flow in a circuit, because the circuit has positive and negative charges (shown in the coloumb), the electrons float freely around the circuit from one atom to another.

Q: How can I use this in my everyday life?

A: Some batteries are acidic, (a car battery), while the more commonly used ones for every day life (AA, AAA, D), are Alkaline. While these batteries are different (chemistry’s), you could technically use the zinc and copper battery (like we did in class), make create a battery if you desperately needed one – and if you had A LOT of fruit with you -.

Q: How can we modify our experiment to improve our results?

A: When we do this experiment, to really get an accurate idea of the differences, a good thing to look at, is the different pH levels between the fruits and the vegetables (acid levels). We could use fruit with a pH meter, and repeat our experiment three times to get the best general result we can. And then, we could test the electric voltage on each, to get the best results and really get a good idea of which fruit or vegetable has the highest pH levels (and acid levels), to conclude which fruit or vegetables will create the most electric voltage.



SSEP Reflection:

In science we were given the chance to create a project with ISS. In our groups we each had to think of an experiment that we could conduct in micro gravity. Here’s what our group chose to do:

In our group, we decided to take bacteria and bad bacteria to see how it would react in micro gravity. We then specifically chose to use Bacteria Vibrio Chlorae with Pili. We chose to do this experiment to see if they would produce faster, or slower to help us determine more the difference of how they react in micro gravity to being in gravity, to help get a better understanding of the bacteria itself. This understanding could help us with many things, not only in science 9, 10… But in life as well if one of us becomes a scientist, or for many scientists who may have this question now, or even other students.

To find a great experiment, we thought more about our question, with lots of research from multiple sources on how we could conduct the experiment, count the Pili, and how we could benefit from this experiment. We then got contact with Miguel Gutierrez, – a SFU graduate in molecular science – who we determined would help supply us with the bacteria that we needed. We also attended the SSEP program at Heritage Woods Secondary School to open up new ideas and to understand the concepts that we planned to do our experiment on.

SSEP 2016 SSEP 2016

This problem could be solved by our experiment idea of having two different types of bacteria sent up into micro gravity to see how they react together, like the two that we choose, Bacteria Vibrio Cholerae and Pili. We want to see how these two different bacteria’s will react together in micro gravity. To help solve our problem, like it was mentioned in the previous. This will also help achieve a better general understanding of how bacteria works, and reacts in not only micro gravity, but also in gravity itself, and to see how much of the Bcteria Vibrio Cholerae was gone, and how much the Pili has grown.

To create the best proposal we could, we wrote up our draft for the first deadline, each taking different parts that we felt best suit each of us – to get the best possible result – and handed that in to be reviewed. We then went to Susan Henderson, to help us review our proposal, and to show us how to properly use Microsoft Word in order to create proper citations. We then re-reviewed our proposal, adding in all the proper citations. Then, that then went on to Claudia Durand to review once again our current proposal, and to give us more corrections on places in our proposal where she thought that we could improve.

The process of creating our proposal went well. I think that our group could have worked more on our communication skills, to make the work load that we had more even. But, we did come out with a strong idea, and well made proposal in the end. I feel that our group did well on going to spend the extra time out of our lunches, or even on pro d days, to get in that extra effort to really try to make our proposal as good as it can be. I feel that our group also did well in reaching out to outside sources to really get an even better sense of what we were doing. With copious amounts of support from everyone whom I mentioned, and lots of encouragement from our science 9 teacher – making this all possible – Mr. Robinson, I feel that this project went very smoothly. In the end I think that we have a very good proposal, and that now we know how to really work well together.