Spectra Notes and Questions

Analyze spectra to understand redshift, blueshift, and galaxy motion!

Review the spectra image handed to you. Discuss and answer with your classmates. How is this similar/ different from EM spectrum?What can you infer about the wavelengths of this spectrum? Spectral Lines Right click and open the link above in a new tab to review the information on spectral lines Examples of spectra line red shifts and blue shifts Line Spectra Watch the video to help understand how spectra is determined! Use the Image to determine if each is redshifted or blueshifted. The laboratory line emission is the control to compare the other objects to. Redshifted Object 1 Blueshifted Object 2 Object 3 Object 4 Redshift and Blueshift- What do they mean? Read the article linked above to explain how red shift and blue shift help to understand galaxy motion. You may want to take notes or refer back to this article to answer questions below! What is red shift; blue shift? object is hot; object is cold object moving away from us; object moving towards us object is cold; object is hot object moving towards us; object moving away from us Fill in the blank with the correct terms. Blue shift, high pitch, low pitch, red shift low pitch high pitch red shift blue shift Fill in the blank with the correct term Although the terms redshift and blue shift seem as though they would only be applied to the visual spectrum due to color, these can be applied to any part of the spectrum!. For example if a radio wave was shifted into the ultraviolet part of the spectrum they are said to be higher frequency orblueshifted. Then if gamma rays are shifted into radio waves these would be lowerfrequency or redshifted. Assessment: The spectra from the light of a star was collected. Analyze the spectra to answer the question. The star is moving _ because it is _ shifted. away;red towards;blue away;blue towards;red