Reference no: EM132450485

Responses to the short answer questions must be accurate and sufficiently detailed (likely several sentences), and they must be in your own words

1. Explain why younger population I stars would contain more metals than older population II stars, and why this is the opposite of what we would predict from our understanding of stellar evolution.

2. Explain what a galaxy rotation curve is and why it provides evidence for the existence of dark matter.

3. Explain the ways in which galactic interactions are an important factor in the evolution of galaxies, and describe some observations that could be explained by galactic mergers.

4. Explain possible ways in which a supermassive black hole may form at the center of a galaxy and the role these objects play in explaining active galaxy phenomena.

5. Describe the phenomenon of the expansion of the universe and the evidence that exists for this expansion.

6. Explain how astronomers are able to estimate the age of the universe.

7. Explain the differences between the inner and outer planets and the factors that led to these differences during their formation.

8. Describe some of the methods astronomers use to detect the existence of planets orbiting distant stars.

9. Describe seismic waves and how scientists have used them to study the Earth's interior.