# Grow Grass Grow

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```					Grow
Grass
Grow
Purpose
Which type of water would make
the grass grow better pond, tap or
salt?
Hypothesis
 I think pond water would grow the best
because it does not have chemicals in it to
affect its growth.

 I think tap water would grow, but not as good
as pond because it has chemicals in it that
make it ok to drink.

 I did not think salt water would grow at all
because I thought the salt in the water would
stop it from growing.
Materials
The materials I used in my project
were 9 pots,1 bag of soil, tap, salt and
pond water, 3 novo-meds (for watering)
and a measuring cup.
Method
Step: 1. Gather materials.
2. Put soil in pots (1 cup).
3. Put 1 inch hole in middle of pot to put seeds
in.
4. Put 12 seeds in each hole.
5. Cover hole with soil.
6. Water grass as needed.
7. Watch for first signs of grass.
8. Record watering and when grass comes.
9. Measure grass as it grows.
10. Select the best type of water.
Variables
Manipulated variable – Type of water
Responding variable – Height of grass.
Controlled variable – Amount of soil and
seeds. Pots they are in.
Type of water. Amount of
light and, placement
under light.
Results
   I used 3 pots per type of water, so I had
the experiment done 3 times.
   At the end I record the tallest piece of
grass per pot.
   This is the information I obtained.
9 pots 9 measurements
Pond             Salt             Tap

Height           Height           Height
Pot #    mm      Pot #    mm      Pot #    mm

2       375      4        0       1       52

6       316      7        0       3       325

8       266      9        0       5       387
Average of experiments
Pond             Salt                Tap
Height           Height             Height
Pot #       mm     Pot #     mm       Pot #     mm

2       375      4        0         1        52

6       316      7        0         3        325

8       266      9        0         5        387

Total        957                  0               764

Average      319                  0           254.6667
Analysis
For my analysis I first recorded my
information in 2 charts, all information and
data averages.
Then I used excel to graph this
information.
The first graph you will see is all data, and
the second one is the averages.
Grouth

P1
400               P2
P3
300
S1

200               S2
S3
100               T1
T2
0
Height      T3
Growth Average

350
300
250
200
Millimeters
150
100
50
0
Pond Water    Salt Water     Tap Water
Type of Water
Conclusion
   In conclusion, I figured out that
my hypothesis was correct.
   Pond water grew grass better
than tap or salt water.
   The average height for my grass
grown with pond water was
319mm, and tap was
254.6667mm.
Note!!!!!!
   Although the average pond
water growth was the tallest,
one of the tap water pots was
the tallest.
   Tap water would have had the
best average except one of the
pots growth was behind the
other two.
   While the growth range of pond
was only 109mm, tap water was
335mm.
Sources of error
• Draft from the door on the right
side.
• Heat from my dads office on the
left side.
• To know if all seeds were equal.
Ways to improve
   Having sunlight instead of artificial light.

   Having a way to see if the seeds I put in
the pots were seeds not just shells.

   Testing salt and pond water for impurities.

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 views: 7 posted: 4/21/2012 language: English pages: 21
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