Gizmo h-r diagram answers - Overview. The Gizmo HR Diagram is a visual representation of stars based on their luminosity and temperature. It provides a way to classify and study stars by plotting them …

 
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GIZMOs - H-R Diagram - Complete Answer Key Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf ... polymerase chain reaction, primer, short tandem repeat Gizmo Warm-up DNA p... By Academia1434, Uploaded: Apr 29, 2021. $13. Physics> GIZMOS > FEEL THE HEAT GIZMOS ANSWER …We would like to show you a description here but the site won’t allow us. H-R Diagram. Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and luminosity. Luminosity. Brightness. Main Sequence Star. A normal star that is undergoing nuclear fusion of hydrogen into helium. Our sun is a typical main sequence star. Star. Nov 10, 2021 - GIZMOs - H-R Diagram - Complete Answer Key Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf Student Exploration River Erosion Gizmo Answer Key. Student Exploration H-R Diagram Gizmo Answer Key. Student Exploration Tides Gizmo Answer Key. Matter and energy resubmission alexiyah franco. 1.05 Atomic Structure and Forces completed alexiyah franco. Student Exploration Earthquakes 1 - Recording Station Gizmo Answer Key student exploration ...Using the H-R Diagram GizmoTM, you will discover how some of these characteristics are related. Start by moving your cursor over the stars in the Star collection. Information about each star is displayed on the right side of the Gizmo. The numbers given for Luminosity, Radius, and Mass are in comparison to the Sun.We'd previously mentioned that the Gizmo VOIP calling service was integrating Google Voice numbers and allowing for free outbound calls. Gizmo has since launched a Gizmo Voice site...Jun 4, 2019 · In the early 1900s, astronomers were able to identify many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. However, astronomers did not yet understand exactly how these characteristics were related. Using the H-R Diagram Gizmo™, you will discover some of these relationships on your own. Betelgeuse. Gizmo hr M1 l3 Answer key hr diagram gizmo worksheet answers + my pdf collection 2021 Student exploration hr diagram answers Answer gizmo exploration 8th excel luminosity science clusters astr 2003Module fourteen h-rdiagramse.doc.docx Student exploration hr diagram gizmo answer keyHr diagram explore learning gizmo cer version.docx.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Hr diagram gizmo answer key"h-r diagram" gizmo Reviewing key concepts covered in the h-r diagram gizmo activityGizmo sponsored. 12 h r diagram worksheet answers / worksheeto.com . Check Details Check Details. h r diagram gizmo answer key - NouellaDyne. Check Details. Copy of Anderson H-R Diagram Gizmo Part A.pdf - Name: …Nov 14, 2022 · Name: Date: Sep 19/22 Student Exploration: H-R Diagram Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf Prior Knowledge Questions (Do these BEFORE using the Gizmo.) red super giant. What type of star has a low temperature and a low luminosity? main sequence red. Study with Quizlet and memorize flashcards containing terms like What factor affects the color of a star?, What factor affects the luminosity of a star?, What is the approximate surface temperature of the sun? and more.Main sequence. A diagonal line on the h-r diagram that includes 90% of stars. What is the relationship in the main sequence graph? As surface temperature increases, brightness increases. What does the y-axis of the h-r diagram plot? Increasing luminosity. What does the x-axis of the h-r diagram plot? Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Gizmo Warm-up The Circulatory System Gizmo shows the heart and blood vessels that make up the circulatory system. Look at the heart. Turn on Show labels. What are the names of the chambers? These are heart valves. Heart valves control the flow of blood through the heart. Name: Date: Sep 19/22 Student Exploration: H-R Diagram Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf Prior Knowledge Questions (Do these BEFORE using the Gizmo.)H-R Diagram. A collection of stars visible from Earth can be arranged and classified based on their color, temperature, luminosity, radius, and mass. This can be done using one or …This graph, now known as a Hertzsprung-Russell diagram, or H-R diagram, is still used today to classify stars into groups. Question: What does an H-R diagram reveal about star types? Observe : Look at the temperature axis on the diagram.Popular books. Biology Mary Ann Clark, Jung Choi, Matthew Douglas. College Physics Raymond A. Serway, Chris Vuille. Essential Environment: The Science Behind the Stories Jay H. Withgott, Matthew Laposata. Everything's an Argument with 2016 MLA Update University Andrea A Lunsford, University John J Ruszkiewicz. Lewis's …Copy of anderson h-r diagram gizmo part a.pdfDiagram gizmo hr cer learning explore docx version student exploration name H-r diagram gizmo student lab sheetH r diagram gizmo answer key. Gizmos h-r diagram answer keyDiagram answer spectral questions use below throughout activity type solved same stars answers …The H R Diagram Gizmo is a useful tool for studying the Hertzsprung-Russell (H-R) diagram, which plots the luminosity and temperature of stars. In Activity B of the Gizmo, students are asked to analyze the H-R diagram and answer a series of questions. Make sure the information you add to the H R Diagram Gizmo Answer Key is up-to-date and correct. Include the date to the template using the Date option. Click the Sign button and create a digital signature. There are 3 options; typing, drawing, or capturing one. Re-check each area has been filled in correctly. H-r diagram gizmo answer key. Hr diagram worksheet answer key — db-excel.comGizmo student exploration star spectra answer key – islero guide answer 14 hertzsprung-russell diagram worksheet answer key / worksheeto.comAnswer key hr diagram gizmo worksheet answers + my pdf collection 2021.Hr diagram student guide answer key answers exploration warnings gizmo packed exciting valuable instructions reading information but make30 hr diagram student guide answers Student exploration hr diagram answersStudent exploration hr diagram answers.Student exploration hr diagram gizmo answer key. Student exploration hr diagram gizmo answer keyGizmo 18- h-rdiagramse.doc Gizmo topographic exploration fdocuments worksheetHr diagram gizmo answer key.. H-R Diagram Gizmo- Activity C - YouTube. Check Details. Based on their given temperatures plot the stars on the Gizmo scale. Check Details ...The orbital diagram for sulfur has seven boxes with two arrows pointing in opposite directions and two boxes with one arrow pointing up in each. The arrows represent the 16 electro...Sep 25, 2023 · Hr diagram explore learning gizmo cer version.docxH-r diagram worksheet answer key H-r diagram gizmo answer keyWorksheet hr diagram answers answer key gizmo worksheeto source. Lab #11: understanding the h-r diagram (continued)Gizmos hr diagram answer key Diagram exploration student answers gizmo hrCopy of anderson h-r diagram gizmo part a.pdf. Nov 10, 2021 - GIZMOs - H-R Diagram - Complete Answer Key Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf Select H-R diagram. Introduction: In the early 1900s, two astronomers—Ejnar Hertzsprung and Henry Norris Russell—independently made a graph comparing star luminosity and temperature. This graph, now known as a Hertzsprung-Russell diagram, or H-R diagram, is still used today to classify stars into groups. Use the Gizmo to create a neutral atom of each of the following elements. Draw the electron dot diagram for each: (Right Click on the picture, click “edit”, move the dots around the element symbols) When you are finished, turn on Show electron dot diagram and check your answers. 6.Jan 16, 2010 · This H-r Diagram Gizmo Answer Key Pdf will be consistently buddy any time. You could not forcedly to consistently finish over checking out an e-book simply put time. It will be just when you have leisure as well as spending couple of time to make you feel satisfaction with exactly what you check out. H-R Diagram. A collection of stars visible from Earth can be arranged and classified based on their color, temperature, luminosity, radius, and mass. This can be done using one or two-dimensional plots, including a Hertzsprung-Russell diagram of luminosity vs. temperature. Launch Gizmo. GIZMOs - H-R Diagram - Complete Answer Key Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf.Use the Gizmo to create a neutral atom of each of the following elements. Draw the electron dot diagram for each: (Right Click on the picture, click “edit”, move the dots around the element symbols) When you are finished, turn on Show electron dot diagram and check your answers. 6.Using the H-R Diagram Gizmo™, you will. discover some of these relationships on your own. Start by moving your cursor over the stars in the Star collection. Information about each star is displayed on the right side of the Gizmo. The. numbers given for Luminosity, Radius, and Mass are in comparison to the. Sun.Student Exploration: H-R Diagram (ANSWER KEY) Download Student Exploration: H-R Diagram Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, …Hr diagram explore learning gizmo cer version.docxGizmo hr diagram Hr diagram gizmo answer keyStudent exploration gizmo answer key : diagram h r diagram gizmo full. Hr diagram gizmo worksheet answersStudent exploration hr diagram gizmo answer key H r diagram gizmo answer key[diagram] h r diagram lab answers. Check Details H r …Gizmo comes with an answer key. Each lesson includes a Student Exploration Sheet, an Exploration Sheet Answer Key, a Teacher Guide, a Vocabulary Sheet and Assessment Questions. The...a star that expands and contracts in a regularly repeating cycle, changing the spectrum as well. Emission spectrum. a spectrum of colored lines on a dark background. Also called a bright line spectrum. Giant star. a bright, very large star with a low density and a relatively low surface temperature. Nebula.Gizmo, 9th Grade Earth Science Learn with flashcards, games, and more — for free.The HR Diagram Donald S. Hayes 1978 Stable Isotope Ecology Brian Fry 2007-01-15 A solid introduction to stable isotopes that can also be used as an instructive review for more experienced researchers and professionals. The book approaches the use of isotopes from the perspective of ecological and biological research, but itsH-r diagram gizmo worksheet answers[diagram] student exploration hr diagram Load wiring: gizmos h-r diagram answer keyGizmos moles answer sheet : answer key chemistry if8766 moles and mass.Gizmo hr diagramH r diagram worksheet answers [diagram] h r diagram lab answers[diagram] h r diagram lab answers. Worksheet h-r diagram[diagram] h r diagram worksheets Stars: hertzsprung-russell diagram worksheet by paige lam[diagram] rosary diagram answers. Check Details. Making a hertzsprung russell diagram: fill out …Do you know the answers to these science questions? Study these 10 science questions you really should know how to answer. Advertisement The U.S. government spends billions each ye...Copy of H-R Diagram Gizmo. Physics 95% (37) 2. 4.05 Circuit Design. Physics 100% (10) Students also viewed. Copy of Gizmo Gravitaional Force; Wave Frequency Velocityand Wavelengthcalculations-1; Daniel Ulanov - Series Circuit Exploration Lab; Daniel Ulanov - Series Circuit Exploration Lab;Looking for information on house framing? Look no further! Click here to learn the basics of house framing, the parts of the frame, key terms to know, and more. Expert Advice On Im...H-r diagram gizmo answer key. Hr diagram worksheet answer key — db-excel.comGizmo student exploration star spectra answer key – islero guide answer 14 hertzsprung-russell diagram worksheet answer key / worksheeto.comAnswer key hr diagram gizmo worksheet answers + my pdf collection 2021.Gizmo For Hr Diagram Answer Key Stable Isotope Ecology Brian Fry 2007-01-15 A solid introduction to stable isotopes that can also be used as an instructive review for more experienced researchers and professionals. The book approaches the use of isotopes from the perspective of ecological and biological research, but its concepts can be applied ...Answer gizmo exploration 8th excel luminosity science clusters astr 2003 H-r diagram gizmo 11 best images of h r diagram worksheet answers. Gizmo docx. Hr diagram gizmo answer keyModule fourteen h-rdiagramse.doc.docx Diagram exploration student luminosityHr diagram explore learning gizmo cer version.docx.This H-r Diagram Gizmo Answer Key Pdf will be consistently buddy any time. You could not forcedly to consistently finish over checking out an e-book simply put time. It will be just when you have leisure as well as spending couple of time to make you feel satisfaction with exactly what you check out.Answer the questions using the above HR Diagram. 1. What factor affects the color of a star? 2. What factor affects the luminosity of a star? 3. What is the approximate surface temperature of the sun? 4. Is the surface temperature of white dwarf stars higher or lower than red super giants?Using the H-R Diagram Gizmo™, you will discover some of these relationships on your own. Betelgeuse Temperature 3400 k Luminosity 9500 suns Radius 1000 suns Mass 20 suns Start by moving your cursor over the stars in the Star collection. Information about each star is displayed on the right side of the Gizmo.lOMoARcPSD|21852561 Gizmo H-R Diagram - Science worksheet Science At Risk (Rice University) Studocu is not sponsored or endorsed by any college or university Downloaded by Gabi Grafstein ([email protected]) lOMoARcPSD|21852561 Name: Kristian Abiassi Date: 03/23/22 Student Exploration: H-R Diagram Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf ...[PDF] Hertzsprung russell diagram worksheet answers 2021. 9. 8. Hertzsprung russell diagram worksheet answers ... also with more related ideas like Gizmo Answer Key Key Winds and Clouds Blank HR Diagram ...GIZMOs - H-R Diagram - Complete Answer Key Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf ... polymerase chain reaction, primer, short tandem repeat Gizmo Warm-up DNA p... By Academia1434, Uploaded: Apr 29, 2021. $13. Physics> GIZMOS > FEEL THE HEAT GIZMOS ANSWER …Hr Diagram Gizmo Answer Key - Wiring Site Resource. Check Details. Module Fourteen H-RDiagramSE.doc.docx - Name: Emilia Torello Date: 11. Check Details. Student Exploration Hr Diagram Gizmo Answer Key. Check Details. HR Diagram Explore Learning Gizmo CER Version.docx - Name: ES Teacher. H-R Diagram. Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and luminosity. Luminosity. Brightness. Main Sequence Star. A normal star that is undergoing nuclear fusion of hydrogen into helium. Our sun is a typical main sequence star. Star. Using the H-R Diagram Gizmo™, you will discover some of these relationships on your own. Betelgeuse Temperature 3400 k Luminosity 9500 suns Radius 1000 suns Mass 20 suns Start by moving your cursor over the stars in the Star collection. Information about each star is displayed on the right side of the Gizmo. Questions (Do these BEFORE using the Gizmo.)Student Exploration- H-R Diagram (ANSWER KEY).docx ...Hr Diagram Gizmo Answer Key Student Exploration Answer Key. hr diagram gizmo answer key student exploration answer key is a great choice for building sets. White is meant by elegancy, luxurious, and modernity. Though it appears …12 h r diagram worksheet answers / worksheeto.comH-r diagram gizmo answers Gizmo h-r diagram"h-r diagram" gizmo. Hr diagram gizmo answer keyDiagram gizmo hr cer learning explore docx version student exploration name Regular scienceCopy of vectors se.Study with Quizlet and memorize flashcards containing terms like Giant, H-R diagram, Luminosity and more.Study with Quizlet and memorize flashcards containing terms like Giant, H-R diagram, Luminosity and more.Student Exploration: H-R Diagram. Directions: Follow the instructions to go through tprompts in the orange boxes. he simulation. Respond to the questions and. Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1.11 best images of h r diagram worksheet answersHr answers gizmo Hr diagram worksheet answers key30 hr diagram student guide answers. 25 hr diagram worksheet answers keyDiagram worksheet answers hr answer worksheeto key via Worksheet hr diagram answer key slope worksheets figures similar xp dode …Dec 29, 2023 · Student exploration hr diagram gizmo answer key. Student exploration hr diagram gizmo answer keyGizmo 18- h-rdiagramse.doc Gizmo topographic exploration fdocuments worksheetHr diagram gizmo answer key.. H-R Diagram Gizmo- Activity C - YouTube. Check Details. Based on their given temperatures plot the stars on the Gizmo scale. Check Details ... We would like to show you a description here but the site won’t allow us. Download Free Student Exploration H R Diagram Answer Key Edition explains how the test is structured, what it measures, and how to budget your time for each section. Written by renowned test prep experts, this book has been fully updated to match the latest test. The 10 intensive practice tests help you improve your scores from each test to the ... GIZMOs - H-R Diagram - Complete Answer Key 100% COMPLETE SOLUTIONS DOWNLOAD TO SCORE OUTSTANDING GRADE AName:Date:Student Exploration: H-R DiagramVocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarfPrior Knowledge Questions (Do these BEFORE using the Gizmo.)1. The image at left shows three stars in the constellationOrion: Betelgeuse (A), Mintaka (B), and ... Gizmo Warm-up. In the early 1900s, astronomers identified many star. characteristics such as color, size, temperature, and. luminosity—or how bright a star is. Using the H-R Diagram. Gizmo™, you will discover how some of these characteristics. are related. Start by moving your cursor over the stars in the Star. collection. Star information ...A spider diagram is a visual way of organizing information in which concepts are laid out as two-dimensional branches from an overriding concept and supporting details are added to...The H-R Diagram Gizmo Answer Key PDF is a valuable resource for understanding the concepts and principles of the Hertzsprung-Russell (H-R) diagram. It provides detailed explanations and answers to the questions and activities in the H-R Diagram Gizmo, allowing students to check their understanding and learn from their mistakes. Name key (53 pnts)_____. ASTR 1000 Lab Activity 9 – H-R Diagram Lab. Objective: To use an online simulator to learn how to read and use an HR diagram. Introduction: The Hertzsprung–Russell diagram (HR diagram) is a powerful tool in astronomy that allows astronomers to study populations of stars, identify their age, predict their lifespan, and how they will behave over time. Copy of anderson h-r diagram gizmo part a.pdfDiagram gizmo hr cer learning explore docx version student exploration name H-r diagram gizmo student lab sheetH r diagram gizmo answer key. Gizmos h-r diagram answer keyDiagram answer spectral questions use below throughout activity type solved same stars answers …Main sequence. A diagonal line on the h-r diagram that includes 90% of stars. What is the relationship in the main sequence graph? As surface temperature increases, brightness increases. What does the y-axis of the h-r diagram plot? Increasing luminosity. What does the x-axis of the h-r diagram plot?Gizmo Warm-up In the early 1900s, astronomers identified many star characteristics such as color, size, temperature, and luminosity —or how bright a star is. Using the H-R Diagram Gizmo, you will discover how some of these characteristics are related.But the voltage is the same across each branch, so V is used for each term.) x Divide each side of the equation by V , and you get an expression for the total resistance of the circuit: Practice: Determine the total resistance of each of the following parallel circuits. Then use the Gizmo to check your answer.The H-R Diagram Gizmo is an online interactive simulation developed by ExploreLearning. It is designed to help users understand and explore the Hertzsprung-Russell (H-R) diagram, which is a graph that plots the luminosity or brightness of stars against their temperature. The H-R Diagram Gizmo allows users to adjust the temperature, radius, and ...Gizmo, 9th Grade Earth Science Learn with flashcards, games, and more — for free.Hr Diagram Gizmo Answer Key - Wiring Site Resource Check Details Hr diagram gizmo answer key. H-r diagram gizmoDiagram activity hr Gizmos hr diagram answer keyHr diagram gizmo worksheet answers. 38 hr diagram gizmo answersModule fourteen h-rdiagramse.doc.docx Hr diagram explore learning gizmo cer version.docxHr …GIZMOs - H-R Diagram - Complete Answer Key Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf.Gizmo For Hr Diagram Answer Key Stable Isotope Ecology Brian Fry 2007-01-15 A solid introduction to stable isotopes that can also be used as an instructive review for more experienced researchers and professionals. The book approaches the use of isotopes from the perspective of ecological and biological research, but its concepts can be applied ...Hr diagram gizmo answer key H-r diagram gizmo worksheet answers Gizmo answer key answers winds clouds coastal diagram worksheet hr worksheeto via. Hr diagram gizmo answer key. Diagram activity hrAnswer gizmo exploration 8th excel luminosity clusters astr 2003 H-r diagram gizmo answersDiagram understand students …Copy of H-R Diagram Gizmo. Physics 95% (37) 2. 4.05 Circuit Design. Physics 100% (10) Students also viewed. Copy of Gizmo Gravitaional Force; Wave Frequency Velocityand Wavelengthcalculations-1; Daniel Ulanov - Series Circuit Exploration Lab; Daniel Ulanov - Series Circuit Exploration Lab;

Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and luminosity. Luminosity. Brightness. Main Sequence Star. A normal star that is undergoing nuclear fusion of hydrogen into helium. Our sun is a typical main sequence star. Star. a celestial body of hot gases that radiates energy.. Huntington bank locations columbus ohio

gizmo h-r diagram answers

211. plays. 18 questions. Copy & Edit. Show Answers. See Preview. 1. Multiple Choice. 30 seconds. 1 pt. There are 3 stars in the constellation Orion; Betelgeuse (A), Mintaka (B), …How do inverter generators work, and are they better than other types of generators? Fortunately, you don’t need highly technical knowledge or even a generator parts diagram to ans... Gizmo Warm-up In the early 1900s, astronomers identified many star characteristics such as color, size, temperature, and luminosity —or how bright a star is. Using the H-R Diagram Gizmo, you will discover how some of these characteristics are related. Start by moving your cursor over the stars in the Star collection. Answer the questions using the above HR Diagram. 1. What factor affects the color of a star? 2. What factor affects the luminosity of a star? 3. What is the approximate surface temperature of the sun? 4. Is the surface temperature of white dwarf stars higher or lower than red super giants?Click on New Document and choose the file importing option: upload H r diagram gizmo answer key from your device, the cloud, or a secure URL. Make changes to the template. Take advantage of the upper and left panel tools to modify H r diagram gizmo answer key.Blue Giants and White Dwarfs. Which star types on the HR Diagram are the coolest stars? Red Giants and some Main Sequence. What is another word for luminosity? Brightness. Who is the HR Diagram named for? Dr. Hertzsprung and Dr. Russell. What is the highest temperature on the HR Diagram? Study with Quizlet and memorize flashcards …Using the H-R Diagram Gizmo, you will discover how some of these characteristics are related. Start by moving your cursor over the stars in the Star collection . Star …H R Diagram Gizmo Answer Key Pdf | Diagram Download GIZMO FOR HR DIAGRAM ANSWER KEY PDF - Amazon S3 book pdf free download link or read online here in PDF. Read online GIZMO FOR HR DIAGRAM ANSWER KEY PDF - Amazon S3 book pdf free download link book now. All books are in clear copy here, and all files are secure so …lOMoARcPSD|21852561 Gizmo H-R Diagram - Science worksheet Science At Risk (Rice University) Studocu is not sponsored or endorsed by any college or university Downloaded by Gabi Grafstein ([email protected]) lOMoARcPSD|21852561 Name: Kristian Abiassi Date: 03/23/22 Student Exploration: H-R Diagram Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf ...Gizmo For Hr Diagram Answer Key gizmo-for-hr-diagram-answer-key 2 Downloaded from legacy.ldi.upenn.edu on 2019-04-24 by guest learn to build and program everything from light shows to arcade games to an ultrasonic security system. First you’ll get set up with an introduction to the Arduino and valuable advice on tools and components. Then you ...Grace called my name, so I answered. It asked me to be kind to myself. I obliged. It asked me to be patient with others. I agreed. It asked me... Edit Your Post Published by jthree...Get the Gizmo ready: Click Reset. Select H-R diagram. Introduction: In the early 1900s, two astronomers—Ejnar Hertzsprung and Henry Norris Russell— independently made a graph comparing star luminosity and temperature. This graph, now known as a Hertzsprung-Russell diagram, or H-R diagram, is still used today to classify stars into groups..

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