Chapter 7 (The Sun - Our Star) Quiz

Chapter 7 (The Sun - Our Star) Quiz - Astronomy 101 Chapter...

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Astronomy 101: Chapter 7: The Sun – Our Star 1. What fundamental force holds the sun together? a. The electromagnetic force. b. The gravitational force. c. The centripetal force. d. The strong force. e. The weak force. 2. Which layer of the sun do we see as its visible surface? a. the corona b. the lithosphere c. the heliosphere d. the photosphere e. the chromosphere 3. Which of the following statements about solar granules is NOT correct? a. Granules are darker around the edges and brighter in the middle. b. Granules are cooler around the edges and hotter in the middle. c. A typical solar granule is about the size of Texas. d. A typical solar granule lasts for about 11 years. e. Granules are seen on the sun's visible surface. 4. How is heat transfer accomplished by the convection method? a. By very excited atoms passing vibrational and rotational energy to neighboring atoms. b. By hot fluid rising and cool fluid sinking. c. By the radiation of electromagnetic waves. d. By the fusion of hydrogen nuclei. e. By magnetic reconnection. 5. What evidence do we have that the granulation seen on the sun's surface is caused by convection? a. The bright centers of granules are cooler than their dark boundaries. b. The bright centers of granules are hotter than their dark boundaries. c. Doppler measurements indicate that the centers are rising and edges are sinking. d. Both a and c above. e. Both b and c above.
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6. Which of the following is true about granules and supergranules? a. They are both about the same size. b. Granules and supergranules each fade in about 10 to 20 minutes. c.
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This note was uploaded on 11/08/2011 for the course AS 101 taught by Professor Biegel during the Fall '11 term at Montgomery College.

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Chapter 7 (The Sun - Our Star) Quiz - Astronomy 101 Chapter...

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