Evidence for the Expanding Universe

Record ID: 
nw-000-000-001-525
First Name: 
automatic
Last Name: 
import
Primary Email: 
Language: 
en-US
Institution Name: 
Resource Published Date: 
Tuesday, December 30, 1969 - 19:00
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.

SMD Forum Primary: 
Astrophysics
Audience: 
Educator
Format: 
application/pdf
Access Restrictions: 
Free access
Learning Time: 
45 to 60 minutes
Materials Cost: 
Free
Individual or Group: 
Instructional Strategies: 
Generating and testing hypotheses
Hands-on learning
Assessments: 
Alternative assessment
Benchmarks: 
http://asn.jesandco.org/resources/S2366823
http://asn.jesandco.org/resources/S2366822
Contributor: 
Harvard-Smithsonian Center for Astrophysics (CfA)
National Science Education Standards: 
True
Math Standards: 
True
Technology Standards: 
False
Geography Standards: 
False
Learning Time Comment: 
URL: 
http://www.cfa.harvard.edu/seuforum/exhibit/resources/CQEdGuide.pdf#page=48
Image Url: 
137.jpg