Curriculum Concept: Describe the characteristic types of galaxies and identify galaxy types using the Hubble Tuning Fork.
Grade level: 9th grade physical science; space science unit
Tools needed:
Computers for students
Worksheets
Access to internet
Web Resources:
Hubble tuning fork diagram with galaxy pictures
Hubble pictures of objects in the sky: galaxies, nebulae, clusters
Strategy:
1. Introduce definition of galaxy
2. Discuss classification as a method used by scientists to organize data
3. Use sky server site to begin the discussion of galaxy types and their characteristics.
4. Students use the worksheet as a guide to investigate galaxy types and to learn to identify each type by its characteristics.
5. Assessment – students are shown pictures of galaxies and asked to identify the galaxy type.
Prior knowledge: Students have studied the big bang and the universe time line to know that
various types of objects are in the sky. The sequence will move from broad concepts to the more particular concepts.
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