Transcript 1) Do Now

Star Temperature vs. Color Lab
10/15
1) Do Now: 1) What are the different star colors?
2) Which color star is the hottest?
3) How can scientists determine the temperature and
chemical make up of stars from Earth?
2)Spectrometers- How to use…
3)Lab Groups- Random Generator
4)HW: 1) Any part of the lab you have not completed in class!!
Which color is which element?
Potassium
Barium
calcium
Copper
Lithium
Sodium
Spectra: fingerprint of stars
Which elements are present in
the star above?
Which element is NOT present in this
star?
The spectrum of a distant star contains sodium lines
that are offset from their normal position, as shown.
What is the most likely explanation?
A. The star is relatively hot.
B. The star is relatively cool.
C. The star is moving rapidly toward us.
D. The star is moving rapidly away from us.
Hertzsprung-Russel Diagram