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Students will calculate the angular momentum and density of the moon and consider the implications of the results for various theories of the moon's origin.

Students will search the Science News archive for other stories related to moon formation.

These questions focus on ideas about the origin of Earth's moon and evidence that supports various explanations of its formation.

These questions focus on gravitational waves, gravitational wave detectors and how observing gravitational waves can improve our understanding of the universe.

Students will design, build, test and optmize their own light-based detector for waves (a simple optical seismometer) and will explore how this detector relates to more sophisticated gravitational wave detectors.

Students will generate and observe waves in a clear pan of water, drawing connections between these waves and light and gravitational waves.

These discussion prompts cover the general properties and types of waves, how humans and other animals detect waves, and the design of laboratory wave detectors.