They squirm away and move into the closest darkness they can tell its dark because of some kind of sensory cell
http://wiki.answers.com/Q/Do_earthworms_react_to_light
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Does an earthworm respond negatively to white, visible light? ... This experiment will test whether earthworms can react to light intensity. ... Each worm was set down exactly half in the dark and half in the light with the anterior end ...
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kancrn.kckps.k12.ks.us/science/docs/inquiry/M%20-%20Sam...
kancrn.kckps.k12.ks.us/science/docs/inquiry/M%20-%20Sample%20Paper%20-%20Earthworm%20exemplar.doc
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Next, we placed an earthworm in the middle of the box. Then we observed which side of the box, the light or dark, the worm went to during a three minute period. We recorded our observations. III. ANALYSIS OF DATA: Twenty-six of our worms went to the dark side and twelve of them went to the light side of the box.
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www.youth.net/nsrc/sci/sci024.html
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Next, we placed an earthworm in the middle of the box. Then we observed which side of the box, the light or dark, the worm went to during a three minute period. We recorded our observations. III. ANALYSIS OF DATA: Twenty-six of our worms went to the dark side and twelve of them went to the light side of the box.
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www.youth.net/nsrc/ejournals/ejournal.004.html
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Does the amount of light on plants affect their growth? ... Under what color light do plants grow best? ... How does an earthworm react to light and darkness?
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www.rossarts.org/naples/ideas.htm
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How do your family's pets react to different types of music? ... Does a plant need some darkness to grow? ... How does an earthworm react to light and darkness?
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www.indianchild.com/science_fair_project_ideas.htm
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Does a plant need some darkness to grow? ... How does an earthworm react to light and darkness? ... How does earthworm population relate to soil type?
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www.agclassroom.org/teacher/sci_ideas.htm
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How do they react to light? Worms don't have eyes like you or I have. But they do have photoreceptors that detect light. These are mostly concentrated in the anterior end. Have participants test to see if worms can detect light from dark. ... The worm will follow the trail of darkness stopping where the trail stops.
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www.exploratorium.edu/IFI/resources/lifescienceinquiry/...
www.exploratorium.edu/IFI/resources/lifescienceinquiry/doesawormhave.html
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Ok. I have to do a science fair project, but we're doing it in like "scientific method" sort of way, where your question must be testable. I WAS going to use "Can you switch an animal cell with a plant cell, and still have them live?", but that isn't ... Traffic Light ... Does an earthworm react to light and darkness?
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www.science-ideas.com/middle-projects.htm
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