Molly Bourbon looks through a spectrometer during "The Heat is On" science class for fifth-graders at School of St. Mary on Jan. 30. | Buzz Orr~Sun-Times Media

Fifth-graders Jacqueline Lara (left) and Dylan Kipp (right) discover reflecting light during a special science class at School of St. Mary during Catholic Schools Week. | Buzz Orr~Sun-Times Media

High Touch High Tech science workshop instructor Cara Ruffo explains electromagnetic waves to School of St. Mary fifth-graders during "The Heat is On" science program on Jan. 30. | Buzz Orr~Sun-Times Media

Bracelets made from ultraviolet beads were used during an experiment on absorption. | Buzz Orr~Sun-Times Media

High Touch High Tech science workshop instructor Cara Ruffo demonstrates use of a spectometer to view the rainbow of colors within white light during "The Heat is On" science class at School of St. Mary. | Buzz Orr~Sun-Times Media