AY102 Introduction to Astronomy Lab

QUIZ 2 Review
 

Updated 8/16/2001

Instructions: Select the best answer from the choices. Use your Lab notes, Lab manual and/or AY101 textbook. When finished press the "Correct Review" button and the correct answers will appear next to yours. This only works if you answer every question. This Quiz has been tested on Netscape and MS Explorer Browsers

1 Lab 5: Observing Lunar Features

     
    a) Which type of lunar terrain has the most craters? 

    b) Which type of lunar terrain most be the youngest? 

    c) The diagram below represents a cluster of craters. ORDER them by age.

    Youngest: 

    Second Youngest: 

    Second Oldest: 

    Oldest: 

    d) The diagram below represents an Earth view of the Moon. The disk of the moon is divided in three areas.

    ENTER the LETTER of the area where I can see lunar features better. (You might want to know the name of this area) :


     

2 Lab 6: Introduction to Spectra and the Solar Spectrum.
     
    a)Below are diagrams representing the three types of spectra we studied. IDENTIFY: continuous spectrum, emission spectrum, absorption spectrum.


     
     

    b)Which type of spectra can you NOT use to identify elements in stars?

    c)Mira is a red giant star and Bellatrix is a blue giant. Which one has the greatest surface temperature?

    d)Below is a top view of the Sun emitting three rays of light. Two rays have their wavelength Doppler shifted as they are emitted from two points in opposite sides of the sun. There is one ray of light that is not shifted coming from the center.

    Is the sun rotating Clockwise or Counterclockwise in this picture?


     
     

    e) Refer to the picture above. Detectors A,B, and C detect light coming from different parts of the rotating sun. Below are the spectra showing a line that is not shifted, blue shifted, and red shifted. MATCH each spectrum with the detector that produced it.
     
     


     
3 Lab 7: The Sun and Solar Activity
    a) Below is a diagram of the Sun’s atmosphere. LABEL: chromosphere, corona, and photosphere.

    A:

    B:

    C:

    b) Which layer shows best in X-Rays? 

    c)Which layer is visible in white light? 

    d) Which layer is seen best in Hydrogen a or Calcium K? 

    e) Where can I see sunspots? 


4 Lab 8: Magnitudes, Spectral Types and the H-R Diagram

     
    a) Sirius has an Apparent Magnitude of –1.4 and an Absolute Magnitude of 1.5. Betelgeuse has an Apparent Magnitude of 0.4 and an Absolute Magnitude of –5.6.

    Which one is brighter as seen from Earth? 

    Which one is intrinsically brighter? 

    b) Below is a H-R diagram of the stars in the Milky Way. LABEL:

    Spectral Type Scale: 

    Absolute Magnitude Scale: 

    Blue Giant Branch: 

    Red Giant Branch: 

    Main Sequence: 

    White Dwarf Branch: 
     
     

 
 


 
 

Correct: Incorrect: Percent:

Note: This grade reflects how you would have done on Quiz 2 if you had taken it just now.
If you have any questions or problems e-mail me at gomez002@bama.ua.edu

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