Visit #6

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Wednesday November 26, 2013

3:30pm

Today was one of the warmer days this week. It was still cold, but it wasn’t as windy as it has been. There has been a bit of snowfall in the past few days, but some of it has been melting a little. It was kind of overcast today.

9 hours, 22 min, 28 seconds

Today I saw some animal footprints on the ground, but the only animal I actually saw was a squirrel. There were lots of small animal prints, and there were some people and dogs at the woods today.

Here is my data from today…

Air temperature: 32°F

Water Temperature: 35.8°F

Water pH: 6

Visit #5

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November 14, 2013

5:30 pm

It was pretty warm today, the temperature was at about 48°F. It was also sunny and a little bit windy.

The length of the day was 9hours, 48minutes, 55seconds.

I didn’t see many organisms today. The woods was kind of quiet. There were lots of leaves that had fallen from the trees, almost completely covering the ground. The trees themselves are almost bare.

Experiment Data:

Air temperature: 48°F

Water temperature: 43.6°F

Water pH: 6

Visit #4

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October 31, 2013

5:30pm

It was pretty rainy today. Kinda cold, the temperature was at 62°F.

Day was 10hours 20min long.

I didn’t notice many organisms out today… it was rainy and wet, so anything that may have been there must have been keeping warm and dry someplace. There were lots of worms on the ground and the trees looked very colorful. Lots of yellows and reds today.

 

I did a part of my experiment today. My results from today were something like:

Air temperature: 62°F

Water Temperature: 50.6°F

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Water pH:  6 (slightly more acidic than neutral)

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Visit #3

 

October 15, 2013

10:15:13

7:00 pm

Was a little rainy, 60°F

Today was 11 hours, 3 minutes, 10 seconds long

I saw a squirrel or two running around today. The leaves on the trees have changed colors very much since the last time I was here. Lots of oranges and browns and reds and yellows. There were a few people there, but not many organisms that I could see. I heard some birds and I heard lots of cicada-like bugs.

Visit #2

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September 30, 2013

7:30pm

sunny today, kind of windy

70°

Day was 11h 46m 07s

I saw some dogs running around in the woods, and heard lots of insects in the trees.

Some of the trees are starting to change colors, and the sun is setting much earlier than it was a month ago. The temperature this weekend was very warm, but it’s likely to get colder soon with the changing season.

Original Research

Question: How does the temperature of water in a stream affect the pH of the water?

Hypothesis: If the sample has a lower temperat

ure, the pH will be higher because a lower temperature of water contains more Hydrogen ions, which is something that causes  water to have a higher pH.

Controlled Variables:

time of day

location of test

size of plot

pH test procedure

limited human disturbance

Materials Needed:

Thermometer

pH testing kit (papers and color chart)

Notebook and pencil for observations and data

Procedure:

1. Go to testing site. Take all materials needed with you. (thermometer, pH testing kit)

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2. Take out one small pH paper and keep it out of any water until the next step.

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3. Dip one end of the pH paper into the water in the stream. Should go halfway up the paper or less. pH paper only has to be in the water for a moment.

**Avoid touching any sand or dirt on the bottom of the stream

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4. Wait at least 2 minutes for the paper to change colors and dry.

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5. Compare the color of the pH paper to the colors on the pH testing kit.

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6. The color determines the pH of the water. Record the corresponding number that is shown on the kit in a notebook. (should be a number between 1-12) This number determines the acidity of the liquid.

7. Take out your thermometer and turn it on (depending on type of thermometer)

8. Put thermometer into the water so that no part of it is touching the bottom of the stream, but most of the end is submerged.

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9. Wait at least 3 minutes for the temperature reading to slow down and stop changing. (the number on the screen or how high/low the red goes)

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10. Record the temperature in your notebook along with the pH of the water.

11. Record any other observations from visit.

12. Repeat steps 2-6 at every visit and don’t forget to record all information and data

Conclusion:

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Based on the data that was taken, the temperature of the water does not affect the pH of the water. As more trials were done, it was evident that the pH of stream water is not affected greatly by the changing temperature of water.

Any sort of errors in this data could include not doing enough tests, incorrectly reading pH paper or key, changing time of day for the experiment to take place..

 

Resources:

http://www.fi.edu/guide/bond/phtesting.html

http://ga.water.usgs.gov/edu/characteristics.html

http://www.professionalequipment.com/guide-to-water-sampling-and-testing/articles/