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This 3 page Class Notes was uploaded by Kiambi Thompson on Friday January 8, 2016. The Class Notes belongs to 2700 at Georgia State University taught by Zuk in Fall 2016. Since its upload, it has received 31 views. For similar materials see History of Motion Pictures in Film at Georgia State University.
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Date Created: 01/08/16
Homework Chapter 10 1. A brown dwarf is best described as: a) a low mass object that doesn’t fuse in its core b) a low mass main sequence star c) a high mass main sequence star 2. Where on the HR diagram are the majority of stars located? a) as white dwarves b) on the main sequence c) as giants d) as supergiants 3. The Orion nebula is a) a reflection nebula illuminated by newly formed stars. b) an emission nebula heated by newly formed stars. c) a supernova remnant. d) a dark nebula. 4. What happens when a protostar joins the main sequence? a) Its surface area increases significantly. b) Its luminosity increases significantly. c) Nuclear fusion begins in its core. d) Nuclear fission begins in its core. 5. An object is found that emits most of its electromagnetic radiation in the infrared. This object could be a a) protostar. b) Gtype star. c) Btype star. d) cool gas cloud. 6. We see an emission nebula via a) reflected blue light from a nearby star. b) blue light emitted by hot (excited) hydrogen atoms. c) red light emitted by hot (excited) hydrogen atoms. d) reflected red light from a nearby star. 7. Red giants burn helium via nuclear fusion in their core. The ash (end product) of this nuclear fusion is a) iron. b) hydrogen. c) lithium and carbon. d) carbon and oxygen. 8. Where is the Sun located on this HR diagram? a) A b) B c) C d) D e) E 9. Which stars on this HR diagram are on the main sequence? a) Vega, Sirius A, and Mira b) Stars at letters A and B and Barnard’s Star c) Sirius A and Sirius B d) Rigel and Deneb e) Pollux and Barnard’s Star 10. What stars will eventually end up composed entirely of helium, and why? Red dwarfs the hydrogen moves to the center and fuses into to helium
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