Expert: Ed - 4/16/2008

Question
what was one reason that aristotle concluded that the earth was stationary? #2 what will happen if a solid moon gets too close to its planet? #3 The absorption spectrum is used to detect the blank of a star? #4 how does the earths gravitational pull affect the moon? #5what function will eventually cause the earths axis to point toward vega rather than toward polaris?

Answer
Robin, come on, don't swamp me with obvious multiple homework questions.  Not cool!  At least get rid of the question numbers, so I can persuade myself that you might actually be interested.  This is pathetic.

You can do this!!!!!!!  Just think about the questions.  Google a few key words.  Use your brain.  For the first question, google a few words like Aristotle physics earth immobile stationary geocentric.  I basically just gave you that answer.  

For the second question google some words like moon and planet, and the phrases "tidal forces" or "ripped apart."  I basically just gave you the answer to that one too.  Saturn's rings are an example of what can happen when a moon gets too close to its planet.  Google saturn rings moon ripped.

The third question is about spectroscopy.  It involves understanding the star's chemical composition.  Got it?

The fourth question was asked because your teacher wants you to understand why we have a moon.  Basically, our gravity keeps it in orbit around us, right?  Say that, for your answer.

The fifth question is kind of hard, so don't feel bad if you don't understand.  The answer is "precession of the equinoxes."  Google that, and look for helpful descriptions and discussion on websites ending in .edu or .gov.

I would try to be more helpful, but they don't like it when we answer questions that are obviously homework questions.  You can do this.  Try the advice I gave you, and if you still have questions, get back to me again and I will try to be more helpful.

Keep Looking Up,
--Ed