Type:

Other

Description:

In this activity, students examine the first line of evidence, galactic motion, for the notion of an expanding universe. By examining the spectrum of light from a galaxy, students can determine whether a galaxy is moving toward or away from us, and how fast. Students will look at optical images of four galaxies, compare the emission spectra from these same four galaxies, and measure the wavelength of the red hydrogen line for each galaxy. This activity is part of the "Cosmic Questions" educator's guide developed to support the Cosmic Questions exhibit. This activity can be used in conjunction with, or independently of, the exhibit.

Subjects:

    Education Levels:

    • Grade 1
    • Grade 2
    • Grade 3
    • Grade 4
    • Grade 5
    • Grade 6
    • Grade 7
    • Grade 8
    • Grade 9
    • Grade 10
    • Grade 11
    • Grade 12

    Keywords:

    oai:nsdl.org:2200/20140407123636913T,Grade 7,Middle School,NSDL,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-115,Grade 8,Earth and space science:Astronomy:Origins and evolution of the universe,Physical sciences:Light and optics,Astrophysics,High School,Space science,Vocational/Professional Development Education,Earth and space science:Astronomy:Stars, nebulae and galaxies,Physics,Space Science

    Language:

    English

    Access Privileges:

    Public - Available to anyone

    License Deed:

    Creative Commons Attribution Non-Commercial Share Alike

    Collections:

    None
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