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1. Circle the letter of each sentence that is true about a light-year. a. It is a typical unit of measure for distances on Earth b. It is a distance of about 9.5 trillion kilometers. c. It is the distance that light travels in a vacuum in a year. d. It is a unit of time.

1. Circle the letter of each sentence that is true about a light-year. a. It is a typical unit of measure for distances on Earth b. It is a distance of about 9.5 trillion kilometers. c. It is the distance that light travels in a vacuum in a year. d. It is a unit of time.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Section 26.2 Stars (pages 834-839) This section discusses how scientists classify stars. It alse describes other Important properties of stars Reading Strategy (eage 834) Using Prior Knowledge Add what you already know about stars to the concept map. After you read, complete yOLur concept map, adding more ovals as needed. For more information on this Reading Strategy, see the Reading and Study Skills in the Skills and Reference Handbook at the end of your textbook. properties include Stars Distances to the StarS (pages 834-836) 1. Circle the letter of each sentence that is true about a light-year a. It is a typical unit of measure for distances on Earth. b. It is a distance of about 9.5 trillion kilometers. c. It is the distance that light travels in a vacuum in a year. d. It is a unit of time. 2. Is the following sentence true or false? Parallax is the apparent change in posilion of an object with respect to a distant background. 3. Astronomers measure the parallax of a nearby star to determine its Properties of Stars (pages 836-837) 4. Circle the letter of each property that astronomers use to classify stars. a. brightness b. distance C. color 5. Is the following sentence true or false? The brightness ofa star as it appears from Earth is callecd its absolute brightness. d. size can be used to identify different 6. A star's elements in the star. Workhook Chapter 26 343 00 Pearson Education Inc, mubliching as Peason Pentke Hol Al nights reserved.
Transcribed Image Text:Section 26.2 Stars (pages 834-839) This section discusses how scientists classify stars. It alse describes other Important properties of stars Reading Strategy (eage 834) Using Prior Knowledge Add what you already know about stars to the concept map. After you read, complete yOLur concept map, adding more ovals as needed. For more information on this Reading Strategy, see the Reading and Study Skills in the Skills and Reference Handbook at the end of your textbook. properties include Stars Distances to the StarS (pages 834-836) 1. Circle the letter of each sentence that is true about a light-year a. It is a typical unit of measure for distances on Earth. b. It is a distance of about 9.5 trillion kilometers. c. It is the distance that light travels in a vacuum in a year. d. It is a unit of time. 2. Is the following sentence true or false? Parallax is the apparent change in posilion of an object with respect to a distant background. 3. Astronomers measure the parallax of a nearby star to determine its Properties of Stars (pages 836-837) 4. Circle the letter of each property that astronomers use to classify stars. a. brightness b. distance C. color 5. Is the following sentence true or false? The brightness ofa star as it appears from Earth is callecd its absolute brightness. d. size can be used to identify different 6. A star's elements in the star. Workhook Chapter 26 343 00 Pearson Education Inc, mubliching as Peason Pentke Hol Al nights reserved.
7. Describe the chernical makeup of most stars, Hydngen and he n combine to meke up The Hertzsprung-Russell Diagram (pages 838-839) 8. Circle the letter of each way that Hertzsprung-Russell (H-RP diagrams might be used. a. to study szes of stars b. to study distant planets c. to determine a star's absolute brightness d. to determine a star's surface temperature or color Deneb d. Seeigeuse Antares Polaris Alaol Aldebaran Sirius Glants Pollux Ajpha Sin Alpha Centauri B Sirlus 8 White dvrarts lue-white White Yelow Ogerad 9. Provide labels for each of the letters shown on theHR diagram above. a. b. C. d. 10. Circle the letter of each sentence that is true about supergiants. a. They are found at the upper right of the H-R diagram. b. They are much brighter than main sequence stars of the same temperature. c. They are 100 to 1000 times the diameter of the sun. d. They are smaller and fainter than giants. 11. How does the brightness of white dwarfs compare to the brightness of main sequence stars? 344 Phusical S
Transcribed Image Text:7. Describe the chernical makeup of most stars, Hydngen and he n combine to meke up The Hertzsprung-Russell Diagram (pages 838-839) 8. Circle the letter of each way that Hertzsprung-Russell (H-RP diagrams might be used. a. to study szes of stars b. to study distant planets c. to determine a star's absolute brightness d. to determine a star's surface temperature or color Deneb d. Seeigeuse Antares Polaris Alaol Aldebaran Sirius Glants Pollux Ajpha Sin Alpha Centauri B Sirlus 8 White dvrarts lue-white White Yelow Ogerad 9. Provide labels for each of the letters shown on theHR diagram above. a. b. C. d. 10. Circle the letter of each sentence that is true about supergiants. a. They are found at the upper right of the H-R diagram. b. They are much brighter than main sequence stars of the same temperature. c. They are 100 to 1000 times the diameter of the sun. d. They are smaller and fainter than giants. 11. How does the brightness of white dwarfs compare to the brightness of main sequence stars? 344 Phusical S
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