Astronomy

For this writing assignment we will address some of the physics concepts from Chapter 4 that you will need to understand in later chapters.  I would like to you to answer the following questions.  When you submit your assignment number each question separately.

1.  Describe Wien's and Stefan's radiation laws--explain each one and give examples from the textbook to illustrate how they work (Section 4-2)

2.  Explain what the continuous emission spectrum, emission  lines and absorption lines are (i.e.  all of the Kirchoff's laws Section 4-4),  what they are used for in astronomy (Section 4-3), and how they form (Section 4-6).

3.  Explain what the Doppler effect is, what red and blue shift mean, and how it is used to study things in the universe (Section 4-7). 

Each answer should be about a paragraph in length or longer.  Make sure to answer the questions in your own words--I'm not looking for a word for word explanation from the book or the bullet points at the end of the chapter.

Each answer is worth up to 5 points.  The characteristics of a 5 point answer are:  

*The question is answered correctly (1-2 sentences)

*There is extensive is elaboration to support/illustrate the answer (3-4 sentences)

*The spelling and use of conventions (capitalization, punctuation) is correct.  Proper grammar is used (sentences flow well when read aloud).   

*The writing proceeds in a logical fashion--it is straight and to the point.  There is no filler or unnecessary information