Astronomy 122

 


Instructor: Elsa M. Johnson
Office: 417 Willamette      email: elsa@uoregon.edu
Office hours: Tue 1-3pm; Wed 3-5pm
Course home page
: http://pages.uoregon.edu/elsa/a122.htm

Schedule: MWF 2:00-2:50 110 Fenton
Links:

Webcom Lectures (Reading Material)

Lecture Notes (on blackboard)

Homework(on blackboard)

Outside Resources

Class Schedule - Please Read!!


Course Philosophy

In science courses, we emphasize critical thinking skills. This means that given some parameters, evidence or information, one can reason the cause and/or effect of the observations and test various hypotheses.  For example, how do we know that the nearest star is approximately 4 light years away if we’ve never even left the solar system? How do we know that the Earth is 4.6 Billion years old?

 

The goals for this course are:

Understanding how we can infer MANY physical stellar properties such as age, mass, size, stage in evolution and composition by simply measuring one quantity – light.

Generating curiosity about the Universe and how the Earth, us and everything on the planet comes from stars.

Practice science by engaging in astronomy simulations.

 

Or, to quote the first lecture for this course:

“Stellar evolution and production of new elements is the physical source for all life in the Universe.  Any educated person should have some understanding of this process”

 

 

 


Required Materials and Websites

§  Register for the online notes under the Johnson section at webcom. Should cost about $20.

§  You need to purchase an iclicker through the bookstore and register the number on blackboard under “Register Clicker Here!!”

 

Websites

There are three websites associated with this course.

1)    This one:  main course website which contains links to the other.

2)    Blackboard site for course

3)    Webcom

 

You have two sources of reading materials for the course. The webcom lectures are the “textbook” for the course (see link above and on blackboard).  They are outside the blackboard environment. The other source is my power point notes given in class that are located on blackboard under Lecture Notes in the side menu. Both this page and blackboard will be updated as necessary and will contain information specific to this class section.  You will need to sign up for the webcom lectures by clicking on “Purchase an access code now” at the bottom right portion of the main webcom page. Be sure to select the section for “Johnson”. Some international credit cards won’t work. If you have any trouble signing up for the web lectures, please let me know.

 

 

 


Grades

The breakdown for your grades is the following:

10% participation via clickers

25% Best midterm score (of two)

35% homework

30% Final

 

Tentative Grade Distribution:

All the grades are curved in this class. Usually, Astronomy 122 works out to the following distribution of grades. However, every class is different.

If the class average is significantly different (over 2%), I will adjust the curve accordingly.

95% and above = A+
90-94% = A
86-89% = A-
82-85% = B+
77-81% = B
72-76% = B-
66-71% = C+
59-65% = C
50-58% = C-

40-49% = D
Below 40% = F

 

Grades for the course are posted on blackboard.

 

 

 


Clickers and Participation

Each lecture will be interspersed with clicker questions. It is crucial that you bring your clicker to class and make sure that it is working properly – your participation grade is based on it.  In order to get full participation points for a lecture you need to answer (correctly or not) 75% of the clicker, multiple choice questions.  Questions can be asked throughout the lecture (beginning, middle and end) so be sure to stay for the full class! There might be 1 to 10 questions asked in class.  I will attempt to use the clickers for every lecture, however you only need to use them for 18 lectures to receive the full participation credit towards your final grade.

 

 

I won’t accept hand-in pieces of paper for clicker answers because you forgot your clicker or you discovered it needs new batteries. The whole point of using them is so that I can see almost instantly what the class understands and doesn’t understand.  Handing in a piece of paper at the end of class with clicker answers doesn’t help you or me.  So be sure to bring your clicker to each lecture and with an extra set of batteries! I will do a roll call at the beginning of the first few classes so that you can register your clicker, if you haven’t done so already on blackboard.

 

 

 


Homework

The homework is designed to familiarize you with the material and practice the concepts taught in class. There will be 5 homework assignments worth 35% of your total grade. Depending on the content covered, the assignments vary in length, style and points. Each homework assignment is equally weighted meaning that regardless of what the total points, each assignment is worth 7% of your total grade. If you skip even one, you will lose out on 7% of your grade. You will turn it in at the beginning of class. The assignments can be retrieved from the blackboard course website.  You must use MS WORD, Notepad or some word-like app and type your answers into the turn-in forms provided. For calculations and entering data, you may hand write answers clearly. If we can’t read it, it doesn’t get credit.  Simulations work best on Firefox and an updated version of JAVA. If you have trouble running any simulation and have updated your browser and JAVA, then please let me know ASAP. Don’t wait until the day the assignment is due. Chances are I won’t get back to you in time.

 

THE RULES: These are my homework policies. Know them.

§  Copying:  Don’t copy others work. Period. Removing a “the” “and” or just a few words or rearranging the sentence using the same words is still considered copying. If we catch identical responses on two different assignments for even just one question, both answers for the question will get zeroes.  You must also do your own simulations. You can work with someone to try to understand it, but you must each produce your own numbers for the particular simulation. Each simulation has some randomness built into it whether it’s a value you must pick or artificial noise generated (ex. HW1) for instructional purposes. It is very rare that two people can coincidentally pick all of the same exact numbers for the entire simulation.

§  Late Policy: Late homework is accepted but loses 10% of the total assignment points for each day they are overdue, and yes this includes weekends.  It is better to email it to me.

§  Redos: There are no “redos” for homework or tests.

§  Picking up Homework:  I will leave graded homework outside my office door (Willamette 417) for you to pick up at anytime. If for some reason I am no longer able to do this you can come by during office hours and pick it up. Usually it takes 1-2 weeks to get homework graded.

§  Emailing Homework: You can email me your homework, BUT it will not be returned to you (email or print).  I highly recommend emailing if you are turning it in late, sick or will be out of town.

§  Homework hints: If the homework requires you to use some kind of online simulation, I’ll demo it in class.

§  Turning in Homework & Responsibility: In order to insure that I get your homework assignment, you must hand it in on time during class, in a pile on the front desk.  If its late, email it. You are also responsible for keeping track of your homework grades posted throughout the term. If you see a column for a particular assignment and a  ‘-‘, that means I don’t have a score for you because I don’t have your homework.  As for my part, there is always the possibility that I inadvertently didn’t record your score, but have your homework – this is very easy to fix.  But I will not lose it. So if you tell me that you turned it in, and I don’t have it, there is nothing I can do. 

§  Homework format: Unless you have to draw a diagram or calculate something, homework must be typed, printed out and handed in otherwise points will be lost.

§  Plagiarizing Work: You must NOT cut and paste text from the web to answer questions. Don’t be lazy. Read the text and write it in your own words. If you are caught this could be trouble for you. See the academic dishonesty below.

 

 

 


Tests

You will have two midterms and a final. Your midterm grade will be the best of the two midterms. All tests are multiple choice, some true false and possible matching. Unless you are significantly ill and have some sort of documentation, there are no make up tests. Vacation plans aren’t considered an excuse (see FAQs and rules below).  The midterms will be given in class on Wednesday 5/2 and Wednesday 5/30. The final is comprehensive and on June 14th at 3:15pm. 

Make up tests:  Make up tests are only given to those who had a serious illness and provide a note from a doctor.  The Student Health Center is no longer providing doctor’s notes.

 

  You can’t make up a test due to vacation, functions etc. 

 

 You are graded on the best of two midterms. So for example, if you take the first midterm and then miss the 2nd midterm it won’t count against you, but you won’t have a chance to improve your midterm score. If you do need to make up a test and have the proper documentation, it will be an essay-question exam. Traditionally, students get lower scores on these than the in class tests.

 

Final Test Date: The test will be offered at the scheduled time (Fenton 110; 3:15 pm Thursday 6/14). You can’t take it earlier or later, so make your vacation/work plans accordingly.

According to school policy, if you have more than 3 (read 4) finals in one day you can reschedule the final. If this is the case for you, and you asked your other professors first and you have proof of having 4 finals (copy of transcript or schedule) then I will reschedule the test for you only. This will also be an essay-type exam.

 

 

 


Email, Questions and Homework Help

I welcome questions from students in class, on email and during office hours. However, I do have a few issues to discuss about email. If you email me the night before an assignment is due, chances are you won’t be the only student doing so. I’m online a lot, but I do get a lot of emails so you might not get a response as soon as you’d like. The chance of me responding to you decreases as it gets later at night. If you send something prior to 9pm, I’ll probably get back to you on time. If it’s a course question, check the syllabus first. If a lot you ask the same question, I’ll send a course-wide email instead of answering them individually. Seeing me during office hours is usually the best way to get help, if you can make them.

When you do email me a question, be as specific as possible without writing a novel. If you just tell me that you don’t know how to do something, then I’ll keep asking you to tell me what you do know until we reach what’s confusing you. Remember I’m trying to get you to think, not do your homework for you. Many students ask “Is this what you want for a response?” which bugs me. Unless it’s a quick fact question like “what is the color of the sky?” I usually expect a few sentences to a paragraph for a response. Just be complete and answer what is asked.  For simulations, calculations, diagrams I will try to be as specific as possible in the instructions.

 

My Office

I’m located in 417 Willamette Hall, which is home to the physics department. My office is located on the 4th floor.

Directions: Take the elevator to the 4th floor, head left and through the double doors (they will be open). My office is the first on your right.

 

Math and Help

You just can’t avoid math and graphs in astronomy – it is impossible. Astronomy for professional astronomers is all about data, which means graphs and math. You measure light from stars in different wavelengths, graph the data, do some statistics and the data will tell you something new and interesting (or sometimes it’s inconclusive).  I am well aware that many of you are not confident in your math skills. Don’t fret, its nothing more advanced than basic algebra. I try to include as many examples as possible in class – in the lecture notes and in the clicker questions. I will also post online video math tutorials from Khan Academy (http://www.khanacademy.org/) that are relevant to the homework algebra. I also recommend working with someone who has stronger math skills.

Unfortunately, we don’t have any astronomy graduate TAs at this time, so help is limited to my office hours (and email if you can’t make the office hours). If you have basic math questions, you can also try the drop-in help center in Willamette 147. Unless there is a class going on, there are physics graduate students in there who can help you with math or any physics question you may have. Again, it is highly unlikely that they can answer any stellar astronomy questions.  Just remember: everybody can do math, you just need to put the time and effort into understanding it and practice problems. In my experience, successful students simply work until they understand it and get help when they need it. Students who fail, don’t put the time in to studying, rely too heavily on others to figure it out for them and in the end try to memorize problems, which just doesn’t work in this class.

 

Outside help

If you are having trouble in this or any course I recommend the Teaching and Learning Center. They do not specialize in astronomy, but they can help you with reading comprehension, writing, math, studying, test anxiety, and time management. See http://tlc.uoregon.edu/ for more information.

 

 

Students and Disability Services

If you require extra assistance, such as notes, extra time on assignments, exams, etc., please contact me before or after class and provide the appropriate documentation from disability services as soon as you can. You may also email me if you are concerned about confidentiality, and hand the form in to me at my office. Please don’t hesitate to communicate with me directly, because most needs vary from student to student and sometimes I need a little more information to understand what works for you.  If you require extra time for the exam, you need to make an appointment with disability services and have them arrange a test place and time for you. Do it early, spots fill up very quickly and students have been turned away if they miss the deadline! 

 

 

 


Policies and FAQ

Academic Dishonesty Policy

If you are caught cheating looking at your neighbor’s test or with notes either on your phone, mp3 player, a piece of paper, hat, arm, water bottle or whatever, you get an automatic 0 on the test. Therefore, no headphones, sunglasses, hats or phones during test time. 

 

Plagiarism and the web: Many students just cut and paste text from the web to answer homework questions. It is usually very obvious and easy to catch, even if you change a few words around.  The University is cracking down on plagiarism by investigating students’ work in all of their classes if there is reason to suspect their work. I’ve already been asked a few times to provide evidence of plagiarism for students who got caught doing this in other classes.  Don’t be one of them!

 

Common Myths about Astronomy Courses

Myth 1: “It is easy to ace this course”

Truth 1: No, the average is typically 70%.

Myth 2: “Astronomy classes consist of pretty pictures and studying constellations.”

Truth 2: Some lectures have pretty pictures, but the focus is on learning how we know what we know about stars.

Myth 3: “This is a 100 level general science requirement, therefore I don’t have to put too much work into it.” or you start the homework 5 minutes before it’s due.

Truth 3: It’s up to you how much work you want to put into it. But, if you don’t do the homework, attend class, study for the exams or read the notes, you will not pass. You can only blame yourself if you don’t put the time into studying for tests and fail the tests.

Myth 4: “I can’t do math”

Truth 4: Yup, I consider this a myth, because you can. Your success at solving any problem depends on how much work you are willing to put into it. This course doesn’t cover a lot of math, but I find that students panic when they see any equation or relation and mentally shut down. It is too bad because math is needed in everyday life. Again, seek out help if you are stuck and believe that you will eventually figure it out!

 

FAQs and Rules for this class

Late Policy: Late homework is accepted but loses 10% of the total assignment points for each day they are overdue, and yes this includes weekends.

 

Extra Credit: There is no extra credit in this class.

 

Make up tests:  Make up tests are only given to those who had a serious illness and provide a note from a doctor.  As of last year, the Student Health Center is no longer providing doctor’s notes.

 

  You can’t make up a test due to vacation, etc. 

 

 However, you are graded on the best of two midterms. So for example, if you take the first midterm and then miss the 2nd midterm it won’t count against you, but you won’t have a chance to improve your midterm score. If you do need to make up a test and have the proper documentation, it will be an essay-question exam. Traditionally, students get lower scores on these than the in class tests.

 

 

Redos: There are no “redos” for any homework or test.

 

Laptops/phones/Distractions: If you are distracting me because you are either talking, texting or watching videos on your computer, I will let you know and ask you politely to stop or leave.  Even though laptops are useful, especially when following the lecture notes, I’ve noticed in the past that students rarely used them for tasks pertaining to the lecture (youtube videos, facebook, etc). They are a major source of distraction for you and everyone around you unless you are using them for lecture. Yes, you are effecting others ability to learn the material as well. If you need to check your Facebook status constantly or watch/play games, then don’t bother coming to class. I really hate texting and surfing on phones as well. If you need to text, do it as discretely as possible. Also if someone is bugging you with aforementioned items, I support you telling them to stop it. I can’t police every person in the class and I shouldn’t have to because this is college and you’re all adults who are responsible for your own academic success.

 

Coming and Going: I understand if you have to get up and use the restroom or get some water because you are coughing. But having people get up, leave and then come back and then leave and return is really annoying. Please try to keep this at a minimum.

 

Final Test Date: The test will be offered at the scheduled time (Willamette 100; 3:15 pm Thursday 6/14). You can’t take it earlier or later, so make your vacation/work plans accordingly. According to school policy, if you have more than 3 (read 4) finals in one day you can reschedule the final. If this is the case for you, and you asked your other professors first and you have proof of having 4 finals (copy of transcript or schedule) then I will reschedule the test for you only. This will also be an essay-type exam.