1. SLOT Week 1 Day 1
1. When light from a star produces a line spectrum similar to that produced by a particular element, what should we conclude about that element? a. The element is present in the star. b. The element is not present in the star. c. The element reflects those same lines on the spectrum. d. The element transmits those same lines on the spectrum. 3. Which of these instruments would be used to analyze the probable composition of the surface of a star? a. a spectroscope b. an oscilloscope c. a radio telescope d. an optical telescope
2. If the bright lines on the line spectrum of a star closely resemble the line spectrum produced by helium, what can we conclude about that star?
a. The star is an extremely young star.     
b. The star has never undergone fusion.         
c. The star has undergone fusion for millions of years.
d. The star has not yet converted helium into hydrogen.

2. Wave Interaction Experiements
Physics 2/4/15

3. Do waves bounce off each other or pass through?
Complete experiment
Report out results on white boards
What do the boards have in common?
Differences?

4. Do waves bounce off each other or pass through?
Written Summaries – One per Group
Claim
Experiment
Evidence
Conclusion