This question uses a diagram to test the student's knowledge of categorization for various astronomical objects (Jupiter, Virgo Supercluster, Polaris, Andromeda Galaxy, Comet Halley, and the Orion Nebula). The student is given the name of the object and is asked to place it in one of three hierarchical categories: Solar System, Milky Way, or Universe.
keywords: category, Jupiter, Virgo Supercluster, Polaris, Andromeda Galaxy, Comet Halley, Orion Nebula, hierarchy, solar system, milky way, universe
swf file: ca_intro_scale.swf