Review for Test #3 (11-21-12) Study the notes and the LABs

ESRT Pg 14
http://www.youtube.com/embed/videoseries?list=PL09E558656CA5DF76 
* Tour of the EMS 01 - Introduction by ScienceAtNASA 37,423 views 3:04
Tour of the EMS 02 - Radio Waves by ScienceAtNASA 18,484 views 3:39
Tour of the EMS 03 - Microwaves by ScienceAtNASA 13,763 views 5:23
Tour of the EMS 04 - Infrared Waves by ScienceAtNASA 14,393 views
* Tour of the EMS 05 - Visible Light Waves by ScienceAtNASA 19,477 views 3:40
Tour of the EMS 06 - Ultraviolet Waves by ScienceAtNASA 14,676 views 5:03
Tour of the EMS 07 - X-Rays by ScienceAtNASA 14,476 views 2:50
Tour of the EMS 08 - Gamma Waves by ScienceAtNASA 13,658 views 3:42 http://www.youtube.com/embed/videoseries?list=PL09E558656CA5DF76 leave me a note... so I know you watched them all... Test on Wednesday! Happy Thanksgiving!

Astronomy Review: 

watch this video.... Intro+to+the+Universe+movie

Lab# 3 Spectrum of the Stars click to watch the video
Lab #4 HR diagram on ESRT pg 15

Describe the different types of star.
MAIN SEQUENCE: Most stars are like this.
GIANT STAR: Cool large star
RED SUPERGIANT: Very large, very cool, very rare
WHITE DWARF: Small, very hot star

and being able to interpret the HR diagram fully! 

and Lab #5 distance and scale planets of the solar system....
ASTRONOMICAL UNIT: The average distance between the Earth and the Sun (1AU = 1.5 x 1011m
Define the light year.
LIGHT YEAR: The distance that light travels in one year. 1 ly = 9.46 x 1015 m
(1 ly = 63 000 AU)
Compare the relative distances between stars within a galaxy and between galaxies, in terms of order of magnitude.
GALAXY: A group of stars held together by gravity. Typically contains 1011 stars and is 105 ly across. Distances between stars approx. 100 ly. Distance between galaxies 106 ly. Shapes can be spiral, globular or irregular