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In this lesson, students will be introduced to how the Doppler effect changes our perception of wavelengths of sound (pitch) and light (color). Students will model how astronomers use the line spectra of stars to identify elements in the stars and... (View More) the speeds of galaxies in the universe. Requires some special equipment for spectral analysis and a darkened room for viewing spectra. Suggestions are included for introducing the Doppler Effect for students unfamiliar with this concept. This activity is part of the Cosmic Times teachers guide and is intended to be used in conjunction with the 1929 Cosmic Times Poster. (View Less)
This is a lesson about the characteristics of ice as a mineral and how it compares to other minerals with respect to hardness. Learners will observe ice crystals, develop a hardness scale and position ice on it. Learners will also practice working... (View More) collaboratively in a team. Activities include small group miming, speaking, drawing, and/or writing. This is lesson 3 of 12 in the unit, Exploring Ice in the Solar System. (View Less)
This is a lesson about how and why ice flows, especially in a large mass such as a glacier. Learners will experience the qualities of viscoelastic materials and view videos of glacial ice flows. They will observe ice flows and materials other than... (View More) ice flowing differently under stress, and will investigate landscape changes as a result of large scale glacial movement. Activities include small group miming, speaking, drawing, and/or writing. This is lesson 5 of 12 in the unit, Exploring Ice in the Solar System. (View Less)
This is a lesson about phase changes. Learners will observe ice melting and freezing under a variety of conditions and relate that to the Messenger mission. This is lesson 1 of 12 in Exploring Ice in the Solar System.