ASTRONOMY 101 HOMEWORK ASSIGNMENTS


Homework Assignments:

May 9
- Study for the final exam.
- CAREFULLY fill out your scantron form before you come to the final exam. There could be a severe penalty if you don't have your RedID filled in correctly (or dark enough). Do not use a bent or crumpled ParSCORE scantron form - if the machine can't read it, you earn no points on the final exam.
- See Class News for details about the final exam.

May 7
Read Ch 17

May 5
Read Ch 15 and 16

Apr 30
- Carefully fill out your scantron form before you come to the exam.
- Study for Exam #4 on Friday.
- Written Homework #5 due Wednesday May 7th:
. Ch 12 #34
. Ch 13 #28
. Ch 14 #27
. Ch 15 #37
. Ch 16 #27
. Ch 17 #27
- Extra credit: Ch 14 Q #46 - show all work in full detail; explain every step.
- Over the weekend: Read Chapter 16 & 17

Apr 28
Read Chapter 15

Apr 25
Review Chapters 5 and 10-13 for exam #4 on Friday.

Apr 23
- Read Ch 14
- Examine & explore NASA's SpaceWeather.com website
- Observe the sky: Try to find the constellation Orion, visible at sunset far in the west. Notice how much it has moved since January. Look at Sirius and note that it is the brightest star in the sky - except for the sun!


Apr 21
Examine/explore NASA's SpaceWeather.com website
Read Ch 13.

Apr 18
- Written Homework #4: Due Wednesday Apr 16
Chapter 10 Q# 45, 46 ; Chapter 11 #48
Note: Typo in Ch 11 #48: the Temperature is 9400 K, not the diameter!
- Read Chapter 12.
- Examine/explore NASA's SpaceWeather.com website (There is a link on the main class web page).

Apr 15
Finish reading Ch 11
Review Ch 5

April 14
Review Ch 10 "Our Sun"
Begin reading Ch 11 "Surveying the Stars"

April 7
- Study for Exam #3.
- Examine/explore/read the following websites:
NASA/JPL's NEO FAQs
NASA's Mars Program

March 28 - April 4 (Spring Break)
Carefully review Ch 5.2 "Thermal Radiation" p 117-119
Read Ch 10 "Our Sun"
Study for Exam #3 on Friday April 11th.

March 26
Finish Chapter 9 "Asteroids, Comets, and Dwarf Planets"
Review extrasolar planets in Ch 6.

March 24
Begin reading Chapter 9 "Asteroids, Comets, and Dwarf Planets"
Review extrasolar planets in Ch 6.

Mar 21
Read Chapter 8 "Jovian Planet Systems".

March 19
Carefully explore and examine the material on the Mars Exploration Rover website. There will be questions on the next exam taken specifically from this website.

March 14
Study for Exam #2 on Monday
Fill out your scantron form before class. Double check the form for accuracy.

March 12
Fill out and bring your ParSCORE Enrollment form to class on Friday.
This is exam #002, Test Form A. Save time on the exam - fill out your scantron ahead of time. Don't lose points - fill out your scantron form accurately. Be particularly careful when filling out your Red ID. Don't add an extra digit - leave the last column blank.
Do not used a crumped or bent scantron form. This is the same scantron form as last time: the large Enrollment form.
Study for Exam #2 on Monday
Try to observe the Moon and Mars next to each other tonight.

March 10
Explore the NASA MESSENGER mission to Mercury website.
Try to observe the Moon and Mars next to each other on the 14th.

March 6
Explore the NASA website: www.nasa.gov

March 3
Read Chapter 7 (finish Ch 7)
Written Homework #3: Due Wednesday Mar 12
Ch 5: Multi-choice # 32, 33, 35, 36
Ch 5 #39, 41, 43, 50b, 51, 52 [SHOW ALL WORK]
Ch 6: Multi-choice # 36, 37
Ch 6: # 53 and compare with the semi-major axis of Mercury [SHOW ALL WORK]
How fast is 73 km/s in miles per hour? [SHOW ALL WORK]
Ch 7: Multi-choice #37 {40, 41, 42}
Reminder: For problems that require calculations, you must show all work - giving just the answer will get no credit. The grading depends on the method as much as the final answer.
Homework is due at the start of class; do not hand in homework once the lecture begins. Wait until the lecture is over. If you interrupt the lecture, your homework will not be accepted.

Feb 29
Begin reading Chapter 7.
Try to answer questions 30-44 in Chapter 5.

Feb 27
Read Ch 6.3-6.5 (finish Ch 6)

Feb 25
Read Ch 6.1-6.2

Feb 20
- Study for Exam #1 on Friday.
- Try to observe the total lunar eclipse tonight.

Feb 18
- Study for Exam #1 on Friday.
- Fill out your ParSCORE Enrollment scantron form before the exam. Carefully enter your information - errors will cause a delay in grading the exams and will cost you 1 point per error.

Feb 15
- Study for Exam #1 on Friday.
- You need a pink ParSCORE Enrollment form (the big 6"x11" version), pencils and eraser.
- Fill out your ParSCORE scantron form before the exam. See "Class News and Information" for instructions. Be sure to put your Red ID on both sides. (Don't enter your phone number - I don't want it!) Carefully enter your information - errors will cause a delay in grading the exams and will cost you 1 point per error.
- Reminder: Written HW #2 due on Monday. All written homework must be typed and multiple pages stapled together.

Feb 13
- Read Chapter 5.2 (finish Chapter 5).

Feb 11
Read Ch 4.4 (finish Ch 4) and read Ch 5.1
Observe the waxing Moon go from crescent to full over the next 2 weeks.
Written Homework #2 - Extra Credit (due Monday Feb 18):
- 3. What time does the waxing crescent moon set?
- 4. Observe the Sky: Sketch the Moon in the sky, and include Orion, Sirius, and Mars on either Feb 13, 14, 15, or 16. Give the date and time. Make sure the shape and orientation of the Moon is correct. (You don't need to be an artist - just an approximate sketch is fine.)

Feb 8
- Written Homework #2 (due Monday Feb 18):
1. Explain the meaning of "Occam's Razor".
2. What time does the first quarter moon set? You don't need to observe the sky - just figure it out. But if you want to, check your answer by actually looking at the Moon phases.
Textbook Questions:
Chapter 3 Questions # 26, 41
Chapter 4 Questions # 28, 35, 39

Feb 6
- Read Ch 4.2 and 4.3
- Feb 7 is the new moon. Notice the waxing phases of the Moon over the next 2 weeks. Pay attention to the shape and the position of the Moon in the sky with respect to the Sun, the time, the horizon, and stars like Rigel and Betelgeuse.

Feb 4
- Think! Think about why we have seasons, and phases of the moon. You cannot learn these from reading a book - you need to think about what is going on.
- Review Chapters 2 and 3.
- Read Chapter 4.1

Feb 1
- Read Chapter 3.2, 3.3, 3.4 (finish Ch 3)
- Written HW #1 due on Monday.
- If you are having trouble with the observational part of the homework, see the "Class News and Information" web page for some hints. In general, frequently check the News and Info page. Also, don't forget to make use of the Astronomy Help Room.

Jan 30
Read Ch 2.4 and 3.1
Attend the planetarium show if possible
Written Homework #1 (due Monday Feb 4; homework must be typed):
Textbook Questions:
- Ch 1, Q: #11
- Ch 2, Q: #1, 4, 9, 27, 31, 33
Observe the Sky Questions:
Look carefully at the stars Sirius, Betelgeuse, and Rigel, and the planet Mars.
1. What colors are these bodies? Report the time and date of your observation and the whether each object is near the zenith, near the meridian, near the horizon, or somewhere in between.
2. Which appears brighter, Mars or Betelgeuse?
3. Which twinkles more, Mars or Betelgeuse?
Note: Do NOT copy from the textbook or anywhere else! Do not try to look up this answer! This will result in automatically failing this homework and possibly failing the course. For the observational part of the homework, do not look up the answer on a book or on-line - you must look atthe sky and report what you see. This part of the homework should only take about 5 minutes once you know where the stars and Jupiter are.
For the problems that require calculations, you must show all work - giving just the answer will get no credit. The grade will be based on the method, not just just the answer. You do not have to type out any calculations, but be very neat.

Jan 28
- Read Ch 2.2, 2.3
- Attend planetarium show if possible. Be sure to reserve a spot a head of time and sign in. See Class News and Info web page for detail.
- Find the stars Rigel and Betelgeuse in Orion, and Sirius in Canis Major. Also find Mars (between the horns of Taurus). For those who want a challenge, try to find Saturn in Leo.

Jan 25
- Read textbook Ch 1.3 (finish Ch 1) and Ch 2.1
- Sometime during the next few days, use the star charts in the appendix of the book to find the constellation Orion. Orion is easily visible at around 9 pm, overhead and somewhat towards the south. Notice the colors of the stars.
- Try to find the star Sirius (in the constellation Canis Major - the big dog). It should be easy to find because Sirius is the brightest star visible from Earth (besides the Sun!). Near Sirius is the constellation Orion with many bright stars. Try to locate the stars Betelgeuse and Rigel in Orion. Note: Much better star charts can be found on-line. Follow the links on our class website.

Jan 23
- Read the textbook Ch 1.1 - 1.2
- Examine all of the textbook to know what's in there and what we'll be covering this semester. Be sure to look at the appendicies.
- Look at the sky througout the semester! Notice the position of the Moon, planets, and stars. Several homework assignments will require you to observe the sky.
- Tonight is one night past a full Moon. Notice where is it in the sky at the time you're looking. It is high in the sky or near the horizon?
- Read, explore, and bookmark the class WWWeb site: http://www.sci.sdsu.edu/classes/ASTR101/astr101.html


Homework must be typed, though numerical problems can be hand-written. Multiple pages must be stapled together.
Homework is due at the start of class.
If you come in late, do not interrupt class to hand in your homework - put it on the table quietly. You can turn in your homework after class, but do not interrupt the lecture or you lose points on your homework.

Grading Policy: Written homework assignments are graded on a credit/half-credit scale. On rare occasions, a homework will earn only 1/4 credit. This is still better than not turning in the homework.
Remember that the homework counts as 20% of your course grade, as much as the exams and the final! Be sure to put in enough effort to earn that 20%. Poor homework grades are the number one reason for poor grades in the course.
Homework that is one class last will be accepted for partial credit.
Show all work when doing calculations. Just writing down the answer is insufficient and unacceptable. Showing your work allows me to give partial credit if the numerical values are incorrect and it is the only way to see how you are doing the problem (i.e. the method). All material submitted for a grade must be written in proper English, at a level appropriate for a college course. Write complete and full sentences for all questions that are not purely mathematical in nature.


Reminder: Committing plagiarism is a VERY serious offense.
``... an appropriate penalty, even severance from the University and in some cases revocation of an advanced degree,...'' (from SDSU's General Catalog). Plagiarism and cheating are at the top of the list of reasons for expulsion, suspension and probation of students.
Fraud and stealing is not taken lightly. Don't throw away all the effort, time, and money you spent going to college (this or any other one) by plagiarizing someone else's work. It is just not worth the risk. You almost certainly will get caught - just as it is so easy to steal material off the WWWeb, it is sooo easy to get caught. It requires just a few keystrokes to check your project and homework for plagiarism. And there is no time limit - semesters later, or even years later, the crime is just as serious (in fact, usually more so - you can lose your degree, job, career!).

Take a look at the SDSU Academic Dishonesty Incident Form (in .pdf format).

Plagiarism is theft. If you copy more than 4 words in a row from any source (including the textbook) and do not reference that source, you may be committing plagiarism.

Simple Rule: If in doubt, quote the source.