ScienceWorks Hands-on Museum will present demonstrations and activities that explore the science of explosions Saturday and Sunday, July 14-15, at the museum, 1500 E. Main St., Create colored flames, launch rockets, and learn about the world of pyrotechnics from 10 a.m. to 6 p.m. Admission is $7.50, $5 for children ages 2 to 12 and adults older than 65. There are additional fees for some activities. See www.scienceworksmuseum.org or call 541-482-6767.