Stars and galaxies quizlet
[DOC File]ASTRONOMY WEBQUEST…… EXPLORE THE UNIVERSE
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Stars and planets are made from gases in a _ nebular (clouds of gas)___. ... Quasars give off more energy than 100 galaxies combined. What gives a star its light? A star is a brilliantly glowing sphere of hot gas whose energy is produced by an internal nuclear fusion process.
[DOCX File]Allendale School District / Overview
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– planets, stars, galaxies, space, and even time! No one knows how big the universe is. In the past, many people thought the universe was infinite. Now, most cosmologists (astronomers who study the universe. “Kosmos” is a Greek word that means “the organization of everything.”) agree that the universe is finite, meaning it does have ...
[DOC File]Lesson 3 | Evolution of Stars
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Stars and Galaxies 49 Name Date Class Lesson Outline continued. 3. Astronomers think that any star with a mass less than 10 times the mass of the Sun will eventually become a(n) . 4. Stars that have a mass more than 10 times that of the Sun become a(n) , which is an enormous explosion that destroys the star at its center. 5.
[DOC File]Stellar Evolution Diagram Answer Key:
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A giant star becomes a white dwarf when the star looses its outer gases and reveals its core. A white dwarf consists primarily of Carbon and can last for 100’s of billions of years. This is the final stage of small stars. These stars still glow because they are still very hot.
[DOCX File]Sec1 Sci P7b WL The Earth & beyond 28word Core …
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Billions of stars grouped together. 数十亿颗恒星组合在一起。 9. Jupiter. 木星. The largest outer planet made of gas, fifth from the Sun. 最大的外星球是由太阳制成的第五颗行星. 10. Light sources. 光源. Objects that emit visible light, also called luminous objects. 发射可见光的物体，也称为发光物体 ...
[DOC File]Teacher Guide & Answers
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5. The distances between galaxies are too large to measure in astronomical units so they are. measured in light-years. A light-year is the. distance light travels in one year, 9.5 trillion km. 6. Scientists think that stars begin as huge clouds of gas and dust. Gravity causes the dust and gases to move closer together.
[DOC File]Astronomy: Part One Study Guide
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A light-year is used to measure _____ between stars & galaxies. Matter in space is distributed [evenly / unevenly] in clumps that are [evenly / unevenly] distributed throughout the universe. Stars. All stars & solar systems start their life cycle as _____, which are _____.
[DOCX File]I declare that this lab is exclusively my own work
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Determining the distances to stars and galaxies is one of the most important, but also one of the most difficult measurements in astronomy. Think about looking at a star in the night sky, and comparing it to the way the Sun looks in the daytime. The Sun is big and bright, the stars small and dim.
[DOC File]Lick Observatory
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C) Elliptical galaxies at high redshifts lack young, blue stars. D) Elliptical galaxies have more gas than spiral galaxies. E) Elliptical galaxies have denser stars than spiral galaxies. Answer: C. 9) If we represent the Milky Way Galaxy as the size of a grapefruit (10-cm diameter), the distance to the Andromeda Galaxy would be about . A) 10 cm ...
[DOC File]Lick Observatory
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7) All pulsars are neutron stars, but not all neutron stars are pulsars. Answer: TRUE. 8) Neutron stars are the densest objects that we can observe in the universe. Answer: TRUE. 9) No visible light can escape a black hole, but things such as gamma rays, X rays, and neutrinos can. Answer: FALSE. 10) Light from white dwarfs shows a gravitational ...
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