UBC Let's Talk Science strives to improve science, technology, engineering and mathematics literacy through the outreach efforts of members of the research community at the University of British Columbia. Our volunteers work with youth from elementary and secondary schools to ignite science excitement and share their knowledge with eager young minds.
Peppered Moths - Grades 3-9
Peppered moths are found England and are white with black spots (grey). This body morph camouflages the moths on the spotted tree bark of local trees. During the Industrial Revolution soot and coal smoke stained the trees black. The grey moths stood out and were spotted and eaten by birds. The moths that were darker in colour quickly became more common than the lighter colour as they survived to breed. After the peak of the Industrial Revolution the soot levels decreased and the grey stippled moths made a comeback. Students will recreate these scenarios with paper moths and coloured backgrounds. Each round, students will take turns gathering moths on either a black or grey background, observing which body morph is primarily “eaten.”
For activity instructions click here: ubclts.com/activitiesdocs/PepperMoth.pdf