Video 1: Honors Only

Watch the video twice. Do not answer the questions until the second watch.

1. Draw Emission and Absorption spectra.
2. Draw what is happening inside the atom for each.
3. Draw the electron ladder and the color resulting from an "excited" and ground state.
4. Why do the spectra of different elements appear different?

Video 2: Non-Honors Only

Watch the video twice. Do not answer the questions until the second watch.

1. Draw each of the 3 types of spectra and the scenario which causes each.

2. Below each, draw what is happening to the electron.

3. Next, summarize the law that states how and why they form. Use your OWN words!

1. What is a spectrum?

2. What is the acronym for stellar spectra?

3. How is luminosity measured?

3. What is the most important diagram in astronomy, and what does it indicate?

4. What is the main sequence?

5. What patterns appear on the diagram? Describe them.