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* * * Plants and pH * * *

Results and Photos Trial 2

Trial 2 of my experiment worked a lot better. Instead of toothpaste I used pond water from my backyard. It was slightly alkaline and had a pH of 7.5. The plant grew well, but clearly not as well as Plant 3 (pH 7.0) did. The results table and digital photos are below

Results Table Trial 2

 

 

Day

Height (cm)

Plant 1 (pH 4.5)

Plant 2 (pH 6.0)

Plant 3 (pH 7.0)

Plant 4 (pH 7.5)

Plant 5 (pH 8.5)

1

3

5

7

9

11

13

15

17

19

21

14.0

14.0

14.0

13.7

14.0

13.8

13.7

13.5

13.5

13.4

13.4

10.5

10.5

10.2

10.2

10.0

9.5

9.5

9.5

9.0

9.0

8.5

13.8

13.9

15.2

16.5

16.5

17.0

17.3

18.1

18.5

19.0

19.5

13.5

13.6

15.1

15.8

16.3

16.5

17.0

17.3

17.5

17.8

18.0

 

10.5

10.5

10.6

11

11.2

12.5

13

13.6

14

14,2

14.5

 

trial2day1.jpg

trial2group1.jpg

trial2day5.jpg

trial2group5.jpg

trial2day9.jpg

trial2group9.jpg

trial2day13.jpg

trial2group13.jpg

trial2day17.jpg

trial2group17.jpg

trial2day21.jpg

trial2group21.jpg

Intel Young Scientist 2004