Climatic graph

DO PLANTS GROW BETTER IN GREEN, BLUE OR RED LIGHT?

The theme for my new experiment is measuring plant growth in three different coloured lights. This duration of the test is approximately 3 weeks. It requires a minimum number of materials and will actually prove something, I'm fairly certain. Yes, I know, this is my third change of heart. The other two were just ideas, very complex ideas, unachievable ideas at that. This one has heaps less to think (or worry) about, clear and identifiable variables, and is within the required time period.

The new method is;

Aim: To investigate the effect of different coloured light on plant growth.

Hypothesis: That green light will have the least influence over the growth of plant.

Materials:

• three small cardboard boxes


• three seeds of the same plant
  
• three identical lamps


• three identical flowerpots


• three pieces of celophane - green, red, blue
  

Method;

1. Fill pots with same amount of soil and fertiliser.
   
2. Plant the seeds.


3. Cover the light bulb of each of the lamps with a sheet of celophane.


4. Arrange the lamps safely inside the boxes, upright and not touching the sides.


5. Place the pots inside the boxes, under each of the lamps.


6. Switch them on and set aside.


7. Record the results after 3 weeks.