Adele – RESULTS MONITOR
T’Yana - TECHNICIAN
Evie – TEAM LEADER
Rosie – PUBLICITY MANAGER
• We decided to focus on light
• Our Aim - to find out if the colour of the light would
affect the growth of the plant.
• Key theme of the project – plants
photosynthesising to help the astronauts in
space.
• It interested us!
• Research told us that it would be an effective way to
grow plants.
• We have previous knowledge
of which lights plants absorb.
• Blue and red acetate.
• Cress seeds
• Soil
• Plastic tubs
• Seed trays
• Lamp
• Pipettes
• We did the experiment twice, to double check
our results.
•3 is the magic number.
(3 times is always best!)
• Control variable
Test on different plants.
Continue using blue light.
Control the control variable more tightly.
We used a
smart phone
app to monitor
light intensity
under all three
boxes.
Colour of filter
Ave
rage n
um
ber
of
kale
gro
wn
1.24 lux 2.48 lux 1.17 lux
Ave
rage n
um
ber
of
buck
whea
t g
row
n
Colour of filter
1.24 lux 2.48 lux 1.17 lux
Ave
rage n
um
ber
of
cress
gro
wn
0
5
10
15
20
25
30
35
40
clear blue red
Number of Cress Grown
1.24 lux 1.17 lux2.48 lux
Colour of filter
• Plants left in different positions
• Buckwheat needed different conditions to grow
• Couldn’t get accurate readings with measurements
• Couldn’t control temperature
•Just concentrated on Cress.
•Left the plants in the same
positions with the same light
intensity.
•Same number of seeds in
each tray.
0
2
4
6
8
10
12
14
clear blue red
Colour of filter
Ave
rage n
um
ber
of
cress
gro
wn
• Controlling Plant Growth. BBC Bitesize. [online]
http://www.bbc.co.uk/schools/gcsebitesize/science/add_gatewa
y_pre_2011/living/controlplantgrowthrev1.shtml
• Red and Blue Light effects on plants. eHow. [online]
http://www.ehow.com/info_7930505_red-blue-light-effects-
plants.html
• Growing cress. GrowVeg.com [online]
http://www.growveg.com/growblogpost.aspx?id=307
• The Truth About Kale. WebMD. [online]
http://www.webmd.com/food-recipes/kale-nutrition-and-cooking
• 10 Health Benefits of Buckwheat. Care2. [online]
http://www.care2.com/greenliving/10-health-benefits-of-
buckwheat.html