# ASTR 100 (Veilleux) HOMEWORK ASSIGNMENTS

Be sure to try the "Test Yourself" Questions at the end of each unit (answers are on page AQ-1 before the Glossary) - this is a great way to see if you are absorbing the material. It is also an excellent way to practice for the exams, which will include multiple choice questions similar to these ones. I recommend doing this throughout the semester for each of the units that we cover.

Always put your name and section number at the top of your homework. Also make sure to TYPE your answers and explain them IN YOUR OWN WORDS. Send a single PDF-formatted (not Word) file to "astro100-010N@astro.umd.edu" where N = 1, 2, 3, 4, 5, or 6, depending on your section number.

## Homework #1 (25 Points) Due Tuesday February 16

 Unit Question Number Number of Points Unit 2 (Page 16) #12 4 Points Unit 8 (Page 68) #7 4 Points Unit 10 (Page 83) #11 4 Points Unit 12 (Page 99) #12 4 Points Unit 16 (Page 124) #11 4 Points Unit 18 (Page 134) #16 5 Points

Extra Credit (4 Points): Go to the Astronomical Programs link on the main class web page (under Useful Links - GENERAL). Run the "Scientific Notation" program until you are sure that you can do this type of problem in your sleep (or on a midterm!). What happens when you get a problem right? Do the same for the "Working with Equations" program. If you have trouble doing either of these problems, be sure to talk to your TA about it. These are the ONLY type of math problems that I will ask you to do on a test. Print out a couple of your answers to get the extra credit.

## Homework #2 (25 Points) Due Thursday March 3

 Unit Question Number Number of Points Unit 35 (Page 260) #15 5 Points Unit 36 (Page 269) #11 5 Points Unit 39 (Page 301) #14 5 Points Unit 42 (Page 327) #11 5 Points Unit 44 (Page 346) #7 5 Points

Extra Credit (4 Points): Follow one of the SOLAR SYSTEM links from the main class web page (under Useful Links - SOLAR SYSTEM). Explore some of the sublinks, and write a paragraph summarizing what you find, and a paragraph describing what you learned (Use your own words!)

## Homework #3 (25 Points) Due Thursday March 24

 Unit Question Number Number of Points Unit 45 (Page 354) #16 5 Points Unit 46 (Page 360) #15 5 Points Unit 21 (Page 154) #12 5 Points Unit 22 (Page 161) #14 5 Points Unit 23 (Page 167) #14 5 Points

Extra Credit (4 Points): Feeling stressed? Slam some asteroids and comets into the Earth and see what happens on the "Solar System Collisions" webpage (Follow the Astronomical Programs link). Describe what happens -- and how often -- for asteroids of several different sizes (small, medium, large, HUGE!). Imagine a rocky asteroid moving at 20 km/s, how big does it have to be to create a magnitude 9.5 earthquake?

## Homework #4 (25 Points) Due Thursday April 7

 Unit Question Number Number of Points Unit 25 (Page 180) #13 5 Points Unit 28 (Page 202) #13 and 14 5 and 5 Points Unit 52 (Page 419) #11 5 Points Unit 54 (Page 439) #14 5 Points

Extra Credit (4 Points): Go to the Astronomy Picture of the Day link from the main class web page (under Useful Links - GENERAL). Describe in a few sentences the image displayed on this website. Make sure to tell us on which day you looked at the website.

## Homework #5 (25 Points) Due Thursday April 21

 Unit Question Number Number of Points Unit 61 (Page 488) #12 5 Points Unit 67 (Page 531) #16 5 Points Unit 68 (Page 538) #13 and 14 5 and 5 Points Unit 74 (Page 588) #16 5 Points

Extra Credit (4 Points): Follow one of the STARS & STELLAR REMNANTS links from the main class web page (under Useful Links - STARS & STELLAR REMNANTS). Explore some of the sublinks, and write a paragraph summarizing what you find, and a paragraph describing what you learned (Use your own words!)

## Homework #6 (25 Points) Due Thursday May 5

 Unit Question Number Number of Points Unit 75 (Page 597) #14 5 Points Unit 76 (Page 608) #15 5 Points Unit 77 (Page 617) #16 and 17 5 and 5 Points Unit 80 (Page 643) #13 5 Points

Extra Credit (4 Points): Follow one of the GALAXIES links from the main class web page (under Useful Links - GALAXIES). Explore some of the sublinks, and write a paragraph summarizing what you find, and a paragraph describing what you learned (Use your own words!)