This is a lesson about infrared radiation. Learners will investigate invisible forms of light as they conduct William Herschel's experiment and subsequent discovery of infrared radiation. They will construct a device to measure the presence of... (View More) infrared radiation in sunlight, explain that visible light is only part of the electromagnetic spectrum of radiation emitted by the Sun, follow the path taken by Herschel through scientific discovery, explain why we would want to use infrared radiation to study Mercury and other planets, and explain how excess infrared radiation is a concern for the MESSENGER mission. This is activity 1 of 4 at the Grade 5-8 band of "Staying Cool." (View Less)

This is a lesson about planet formation. Learners will observe and describe differentiated samples in the Meteorite Sample Disk (or photographs), conduct experiments to model the separation of light and heavy materials within a planetary body,... (View More) relate meteorites to the core, mantle and crust of asteroids, and model the break-up of differentiated planetary bodies to expose the interior layers. Materials lists, and advanced preparation and procedural tips are included. This is lesson 11 of 19 in Exploring Meteorite Mysteries. (View Less)