A good science fair project for a seventh grade student is to explore the relationship between eye color and sight. The project attempts to answer whether or not a person's eye color affects their ability to identify colors in low light.
To start, the student must find 15 people with blue eyes, 15 people with green eyes and 15 people with brown eyes, none of which wear contacts or glasses and all of which are around the same age. Blindfold each participant and lead them to a dimly lit room with an array of colored construction paper and ask them to identify the colors. Let their eyes adjust in the light for two minutes and ask them to identify the colors once more. Analyze the results and see if there is a correlation between eye color and percentage correct.