Wednesday, November 9, 2011

Scientific process

Problem: Does the current affect the certain amounts of chemicals in the water.

Hypothesis: Yes, it does impact the certain chemical levels because the water could flow in certain chemicals while still areas don't let any new chemicals flow in.

Experimental design:
Materials:
Chemical testing kit.
Water from certain areas.
Pencil
Paper

Variables:
CV- The river,the water, the testing supplies
DV- How much chemicals were in the water.
IV- How much test analysis stuff you had to put in it.

Procedure:
To do our project we had to walk down to the river. We checked the weather before we left so we know it wouldn't be bad weather. Then we each went to our own spots on the river. We each got our own chemical analysis kit. We take out the water sample tube's and we fill them up with water. We took out any extra water that was in the tubes, and added the chemicals that needed to be added. We kept doing that for all the analysis's. Then we wrote down all the results. Finally, we cleaned out the tube's and put all the material away.
  1. Ammonia Nitrogen - Yellow, positive
  2. pH - green, pH 8
  3. Chlorine- clear, negative
  4. Chromium- clear, negative
  5. Copper- clear, negative
  6. Cyanide- clear, negative
  7. Iron- clear, negative
  8. Nitrate nitrogen- pink, positive
  9. Phosphorus- clear, negative
  10. Silica- light blue, positive
  11. Sulfide- yellow, negative
Conclusion and Analysis:
My group wanted to see if the current affected the certain chemicals in the water. We hypothesized that it affected it by having more chemicals in the area that has more water running through it versus where the water is still. Our analysis proved that we were right, that places had a good amount of chemicals where the current was running though it, and where was little to no chemicals where there wasn't a current.

After doing the analysis we realized that we were right because whenever new water flows in new chemicals flow in, while where there is no current there is no new chemicals flowing in and the old chemicals die.

The problem though was that we had to collect all the water right away because they opened up part of the dam to let some new water flow in and raise the water level. We tried to get the water perfect but the water might have gotten old and the chemicals died.

Why we should have uniforms. (my persuasive essay)

Author's note: My purpose for writing this piece is so people see that I think we should have uniforms. My goal for this writing piece is that I can be very persuasive and have good organization and word choice.

When I wake up, I start sorting through all of my clothes to find the right thing to wear. If only there was something that would help eliminate that problem. Maybe there is. To ensure equality of dress and opportunity for accessorizing, everyone should have to wear uniforms.

I think we should have to wear uniforms because people would never be able to break dress code. Plus then people could accessorize it but never over accessorize it. That's a good thing because people would be able to show their personality but still follow the rules.

Plus it would help all the teachers a lot. It would help them because they wouldn't have to stress about the dress code rule to the kids. Also they wouldn't have to worry about anyone leaving any extra clothing that the kids wear, like sweatshirts, sweaters, jackets, etc. This rule would also help the teachers by not having to worry about their kids wearing any extra accessories that hang off of them, like chains, annoying bracelets(that would also help the other kids) , and stuff like that.

In conclusion, to decide what uniform we would wear we could have a design contest, or something and have the students decide what uniform they like best. That would work because it would be school appropriate, the kids would be happy, and we wouldn't have to stress over what we are going to be wearing tomorrow.