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The Type of Water Affects the Height of Egeria Densa-Sophie, Annabelle, and Booker-'08-'09

Page history last edited by Hassan Wilson 14 years, 11 months ago

The Type of the Water Affects the Height of Egeria Densa

 

By Sophie, Booker, and Annabelle 6J 

     Our hypothesis was the type of water affects the height of egeria densa. We had four 2 liter bottles with 1,250 milliliters of different types of water in each bottle, along with a 6 cm egeria densa plant and 1 cup of fish gravel. Our different types of water were salt water, tap water, Poland Spring, and Seltzer. Every week we measured the height of the Egeria Densa to see if it had grown.

 

Our materials were:

  • four 2 liter bottles-empty and clean
  • 1 liter (4 cups) of Petco fish gravel
  • 1 liter (5 cups) of Poland Spring
  • 1,250 milliliters of tap water
  • 1 liter bottle of seltzer
  • 4 Egeria Densas
  • 50 milliliters of salt
  • Ruler
  • Measuring cups
  • Scissors
  • Spoon

Our procedure was:

  1. Cut off the tops of clean bottles at 21 cm.
  2. Pour .2 liters (1 cup) of gravel into each bottle.
  3. Pour in 1,250 milliliters of tap water into 1 bottle.
  4. Pour in 1,250 milliliters of seltzer into 1 bottle.
  5. Mix 50 milliliters of salt with 1,250 of tap water in 1 bottle. Stir with a spoon.
  6. Pour 1,250 mL of Poland Spring into 1 bottle.
  7. Cut the Egeria Densa at 6 cm.
  8. Plant Egeria Densa in the gravel 2 cm under.
  9. Measure each Egeria Densa every tuesday by pulling the plant out of the water and putting it up against a ruler.

 

Results

 

 

 

 

The Height of Egeria Densa is Changed When the Type of Water is Manipulated 

 

The Type of Water

Height of Egeria Densa

Average Height of Egeria Densa

Annabelle

Sophie

Booker

Seltzer

8 1/2 centimeters 

8 centimeters 

9.3 centimeters

8.3 centimeters

Poland Spring

8 centimeters 

 14 centimeters

10.16 centimeters

10.72 centimeters

Tap

8 centimeters 

10 centimeters 

9.3 centimeters

9.1 centimeters

Salt

8 centimeters 

9 centimeters 

8.5 centimeters

8.5 centimeters

 

 

   

 

Lessons Learned 

  • We learned that the type of water that works to increase the height of Egeria Densa is Poland Spring.
  • We also learned that not only does Poland Spring water helps increase the height of an Egeria Densa, that it makes it greener and sprout more branches.
  • We learned that seltzer water decreases the plants hieght probally becuase of the carbonation. 
  • We learned that our groupmembers did not perform the experiment the same way because we all started the experiment with a different height of egeria densa (Annabelle at 6 cm and Sophie and Booker at 10 cm).  
  • Also the way Sophie measured the plant (by taking it out of the water) could affect the growth of the plant.
  • In addition, the plastic of the bottle may have affected the growth.
  • We all held the experiments at different houses with different climate, sunlight, air temperature, etc. 

Check out our other pages!!!!

The Volume of the Container Affects the Height of Egeria Densa - Annabelle, Booker, Sophie '08-'09

The Type of Water Affects the Height of Egeria Densa-Sophie, Annabelle, and Booker-'08-'09

The Volume of Container Affects Height of Blanket Flower-Annabelle, Booker, Sophie '08-'09

 

Comments (22)

sophie20156j said

at 7:02 am on Apr 3, 2009

Lets finish page soon- by monday- guys!!!!!!!!!!
Sophie

annabelle20156j said

at 6:37 pm on Apr 3, 2009

mr. wilson changed the due date to friday!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

sophie20156j said

at 3:32 pm on Apr 7, 2009

guys if you could remember how much water we put in each bottle that would be great! thanks!

booker20156j said

at 4:29 pm on Apr 8, 2009

sorry i couldn't get on

sophie20156j said

at 6:22 pm on Apr 8, 2009

Its all right. I understand.

sophie20156j said

at 6:25 pm on Apr 8, 2009

Annabelle,
Was this the page you did all the work on because it does not show up on my computer too!?

sophie20156j said

at 7:32 pm on Apr 8, 2009

If you guys could post your results on the comments here and on our other page please! It would make it a lot easier to make our results section. Thanks so much!!!

annabelle20156j said

at 8:57 pm on Apr 8, 2009

sophie it was the other page!

annabelle20156j said

at 9:20 pm on Apr 8, 2009

guys,
could you please fill in the table with your results?

annabelle20156j said

at 9:27 pm on Apr 8, 2009

sophie,
i measured my plant differently! i just stuck the ruler straight in the water against the plant!

sophie20156j said

at 6:29 am on Apr 9, 2009

Oh well maybe we could just say that in our lessons learned OR if your plant was really planted 2 cm in the gravel (mine wasn't) then you could just add 2 cm.

annabelle20156j said

at 3:38 pm on Apr 9, 2009

sophie,
thanks for adding your data now we just need booker's

sophie20156j said

at 5:49 pm on Apr 9, 2009

Mr. Wilson my pictures will not show up! Can you please help me? Thank you very much!!

annabelle20156j said

at 9:37 pm on Apr 9, 2009

sophie,
i can put my pictures in

chuma20156h said

at 2:44 pm on Apr 16, 2009

What is a Egeria densa?

booker20156j said

at 4:13 pm on Apr 17, 2009

Egeria Densa is a kind of water plant that looks a lot like Elodia

shiraz20156h said

at 6:21 pm on Apr 17, 2009

Very good page. I liked the photos. There wasn't anything wrong with it except that the data table was a little too big.

chuma20156h said

at 5:04 pm on Apr 23, 2009

Yes. Very good. I agree with Shiraz though. Your data table is REALLY big. Overall: GREAT JOB!!!

sophie20156j said

at 8:27 pm on Apr 28, 2009

Guys,
I thought the plant was cut at 10 cm! What did u cut it at????!! If we cut it with different height we will have to change our poster!!!!!!!!!!!!!!!!

annabelle20156j said

at 8:59 pm on Apr 28, 2009

i cut it at 6 cm! i thought we told booker to write that in our conclusion????????????????????? i am pretty sure we metioned it someplace!!!!!!!

felix20156h said

at 10:05 pm on Apr 29, 2009

Ill start with cold feedback...
In the conclusion you didn't add that impurities coming of the plastic could affect the plant's growth.
Also couldn't taking the plant out of the water affect the growth?

reader said

at 3:20 pm on May 2, 2009

You guys did a great job

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