This page is http://www.csam.montclair.edu/~west/ast180/reviewsheet3.html
These review questions are meant help you to organize what you have learned in class. Remember to review the chapters in the book also.
1. Review all the other review sheets.
2. Draw a Hertzsprung-Russell diagram. Describe the 5 stages in the life of a star like the sun. Trace this on the H-R diagram. Describe what happens to planets at each of these stages.
3. How is the life of a star of 20 solar masses different from the life of the sun? Trace this on a H-R diagram. How have such massive stars in the distant past been important to Earth?
4. Sketch the Milky Way galaxy from the side and from the top. (Include the disk, halo, solar system, gas and dust clouds, nuclear bulge, globular clusters, spiral arms, and scale. Describe the motion of the solar system in the Milky Way. What can this tell us about the Milky Way? How is 21 centimeter radiation emitted? What does this tell us about the Milky Way?
5. How did Edwin Hubble resolve in 1924 the nature of the nebulae? Describe and sketch his classification scheme for galaxies.
6. What is the Doppler effect, and how can it be used to tell the direction and the velocity of an object in spectroscopic analysis? Tell how we measure the distance and the velocity of a nearby star, and of a nearby galaxy. Describe Hubble's law of cosmological redshift, and what it means.
7. Describe two models (Big Bang, Oscillating) of cosmology which try to explain Hubble's law. Tell which one is preferred today and on what evidence.
8. For each of the following people tell when he lived and how he changed our view of the universe: Ptolemy, Copernicus, Galileo, Kepler, Newton, Shapley, Hubble.
9. Identify the following radii: 3 miles, 10 miles, 4000 miles, 240,000 miles, 1 au, 40 au, 30,000 lightyears, 14 billion lightyears
10. Name and distinguish between twenty types of astronomical objects (such as terrestrial planets, main sequence stars, spiral galaxies,...).
11. Think about the problems at the end of each chapter in the textbook.
12. What was the most surprising, intriguing, or exciting thing you learned in this course? Note: this question will appear on the final exam.