If one looks at a rain cloud with the Sun behind one's back, the sunlight and water drops may interact just right, revealing the familiar arc of red, orange, yellow, green, blue, indigo, and violet. Many of people have been pleasantly surprised to see a rainbow in the sky, but probably have not considered why they occur. Rainbows are caused by…

Presents activities that utilize balloons to encourage students to explore questions related to scientific concepts. Concepts explored include light, heat, charged ions, polarization, and the sense of smell. (MDH)

Uses a projector, a prism, and two screens to demonstrate the composition of white light and detect color. (MDH)