The information that the temperature, composition and motion of a star provides.

What information do the temperature, composition and motion of the stars provide?

Working with surface erosion of the inner planets of the Solar System.

List the most important causes of surface erosion. Rate Earth, Venus, Mars and the Moon in order of decreasing rate of erosion.

Using a spectrograph...

A.) How can a spectrogrph be used to indicate that the rings of Saturn are not solid? B.) Astronomers in the 1940's had difficulty measuring the amount of water in the Martian atmosphere spectroscopically, becuase the Earth's atmospheric water got in the way. They could not yet fly above our atmosphere. How could the spectral lines from the two planets be separated, so that accurate measurements can be made? C.) A distant star yields a spectrum showing two sets of hydrogen spectral lines: a strong red shifted set, and a weaker blue shifted. How might you interpret this observasion?

Relativity theory

a.) Draw a space-time diagram for a piston moving back and forth in a cylinder. (use the line of motion of the piston for the space coordinate)...a description of how one might make such a diagram would be sufficiant. b.) Clocks A and B are synchronized and the clock A is sent on ten fast earth orbits and brought back. Now that the clocks are at rest again relative to each other, which of the following are true (Why?): 1.) A is running slower than B 2.) A is behind B in time 3.) A is smaller than B 4.) A is more massive then B

Rotation and revolution...retrograde

a.) Most bodies in the solar system perform the usual eastward rotation and revolution, with both axis roughly parrallel. State three that deviate from this norm. b.) What in your opinion are the 2 bodies in the solar system, not including earth, that are the most likely to support life? For each, give two reasons why it might not.