Sci-box_Light re-leaf

			Light re-leaf


		Does the colour of light affect plant growth?

PLAN	Over several weeks (or longer) grow a number of plants in identical conditions - except the colour of the light they receive. Record the progress of the plants. What colours of light will you use? How will you change the colour of light for each plant? Where will you keep the plants? How often will you water them?			I WILL NEED	Several young plants of same variety OR Plant pots, potting compost, seeds, water trays, etc.
				I MAY NEED	Several large boxes. Coloured gels / light filters.
				FAIR TEST	How will you ensure that this is a "fair test"?

	PREDICTION	What do you already know about plants that are kept in the dark? What do you think might happen to plants in different coloured light?

PRACTICAL ACTIVITY	Describe the equipment you used and how you made it. What was the purpose of this equipment? What did you observe? Did you encounter any problems? What did you do to overcome these?			COLLECT DATA	You will need to record the height, colour and physical appearance of each plant. How often will you collect data? You could take photographs.
				ANALYSE DATA	Are there any differences in plant height or shape? What about the colour of the plant stem and leaves?
				PRESENT FINDING	A diagram would help to explain the equipment you designed. A written account would be useful to explain what you did. Photographs of the plants at various stages might be interesting. What is the best way to present your data? A bar chart?

	EVALUATE INVESTIGATION	If you were going to do this investigation again, would you make any changes to your equipment?

	If you have carried out this investigation, click the icon to send in your results to Brainboxx and we may publish your work on the website. It is best to e-mail the results of your investigation or you may need to send them by post. Make sure you get permission from a teacher, parent or other adult before you get in touch.
			Experiment & results