Measurement of Star Qualities Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. A watt is equal to:

Question 2 2. An AU, is an astronomical unit:

Question 3 3. The outward pressure of hot gases balancing the inward pull of gravity is known as:

Question 4 4. If a star has a parallax of 0.3, how far away is it in light years?

Question 5 5. If you quadruple the distance to a light source, then the apparent brightness will:

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Question 6 6. This is a graph that plots wavelength vs. intensity of light:

Question 7 7. A star coming towards Earth (assuming the Earth is stationary), will have a:

Question 8 8. Where would you find a red giant on the H-R diagram?

Question 9 9. The outer layers of a star:

Question 10 10. This is a neutral, nearly massless subatomic particle with a speed near that of light itself:

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Question 11 11. The hotter an object becomes:

Question 12 12. Luminosity is sometimes called:

Question 13 13. Which of these is the hottest?

Question 14 14. Unlike luminosity, apparent brightness depends on:

Question 15 15. A stellar parallax (p) is a term for the deviation of a star measured across ____ AU:

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Question 16 16. Which of these stars is more likely to have molecules in its atmosphere?

Question 17 17. Which of the following would have weak Balmer lines?

Question 18 18. If an object is coming towards you, the light emitted by it will have a(n) _____ wavelength, the sound emitted by it will have a(n) _____ wavelength.

Question 19 19. The use of unique patterns of spectral lines to identify a chemical substance is known as:

Question 20 20. A star's inner layers must have _____ to counteracting higher amounts of weight:

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Question 21 21. The arrangement of spectral classes based on temperature is known as the:

Question 22 22. This is the force that binds protons and neutrons inside atomic nuclei:

Question 23 23. In order to move down an energy level, an electron will:

Question 24 24. A continuous spectrum refers to:

Question 25 25. For a star to be stable, a stars inner core must have:

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Question 26 26. Which of these is coolest?

Question 27 27. An absorption line spectrum can also be called a:

Question 28 28. Using your knowledge of how distance, apparent brightness, and luminosity relate to one another, then if an imaginary star were to stay the same distance away from us, but all of a sudden we observed a decrease in its apparent brightness, then what must be true?

Question 29 29. What is the name of a stepwise process of three nuclear reactions that build a helium atom?

Question 30 30. In nuclear fusion, positrons combine with electrons to form:

Measurement of Star Qualities Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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