Q Topic: Spectral Classes of Stars Purpose This activity assesses students' mastery of learning objective #1 Compare and contrast the main properties of different spectral classes of stars. The Canvas Student GuideLinks to an external site. provides instructions for replying to a discussion postLinks to an external site.. Only a student's first post can be counted because everyone else's posts are visible after you post the first time. I will grade your answers and provide detailed feedback after the discussion has closed. Directions PART 1 due Thursday at 9pm: Use the following stars to answer the questions below. Look carefully at each spectral type AND luminosity class! Star Spectral Type & Luminosity Class Aldebaran K5 III Alnitak O9 I Alpha Centauri A G2 V Antares M1 I Barnard’s Star M4 V Fomalhaut A3 V LP 944-020 M9 V Regulus B7 V a) Which star has the lowest surface temperature? b) Which star has the highest surface temperature? c) Which star is bluest? d) Which main sequence star is brightest? e) Which star has the longest life? f) Which two stars will soon die in supernova explosions? g) Which star would you most like to live near (on one of its planets)? Give at least one scientific reason for your choice. PART 2 due Sunday at 9pm: On Thursday at 10pm, a student's post will be assigned to you for Peer Review. Once your student for peer review is assigned, the notification you receive allows you to access his/her/their post to leave your comments. Do you agree with his or her or their choice for question g? Answer why or why not in at least two sentences. If any of their a) through f) answers seem odd or interesting to you, you may also comment. Peer reviews are not for giving grades to the students. I am looking for gentle, guiding advice, questions, praise and other scientifically relevant comments. I am hoping that looking at each other's work will help you improve yours! You can view peer review notifications in Canvas in the Recent Activity Stream, the To Do list, and from the individual discussion page. Once peer reviews are assigned, you can also be notified according to your Canvas notification preferences. Click on "Review Now." To complete the peer review you must review the student's discussion reply and add a comment in the comment sidebar. Don't enter anything into the Rubric mentioned below for peer reviews; that is just for you to see how I will grade each discussion. Canvas looks like it will force you to use the Rubric BUT it will not record your peer review if you write in the Rubric and you will earn no points if you fill it in! The peer review must be written in the comments sidebar. Rubric To view grading criteria, click on the three dots in the upper right and select Show Rubric. (This is not for use with the peer reviews!) After I have graded your Discussion, visit your Grades page and click on the Rubric icon at the right side for this Discussion to see my personal comments to you.