ch14 - Chapter 14 The Stars How much longer can the Sun...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
226 Chapter 14 The Stars: How much longer can the Sun sustain life on Earth? 1. The energy source of stars is primarily associated with a. the reactions of atoms in the star corona. b. the reactions of nuclei in the star core. c. the reactions of atoms in the outer regions of the star. d. burning of elements until they become radioactive. e. burning of elements heavier than lead. Ans: b Link To: The Anatomy of Stars Difficulty Level: Easy 2. If scientists located a Dyson Sphere, they would find a. something made from a dismantled planet. b. a planet in orbit around our closest star. c. an energy source built to surround a planet. d. an object at the core of the Sun. e. the corona during a total eclipse. Ans: a Link To: The Anatomy of Stars Difficulty Level: Easy 3. The solar wind a. extends into space as far as Mercury. b. consists of hydrogen and carbon particles. c. is a part of the Sun’s atmospheric circulation. d. affects the magnetic fields of planets. e. is another term for the Sun’s chromosphere. Ans: d Link To: The Anatomy of Stars Difficulty Level: Easy 4. Which of the following can be said about large stars? a. Large stars have a longer lifetime than smaller stars.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chapter 14 227 b. Large stars have a shorter lifetime than smaller stars. c. Large star lifetime is about the same as that of smaller stars. d. The helium in the large star's core burns to produce hydrogen. e. Large stars are the source of oxygen in photosynthesis. Ans: b Link To: The Life Cycles of Stars Difficulty Level: Easy 5. At this moment, the Sun is producing energy by burning a. plutonium. b. anthracite. c. hydrogen. d. helium. e.iron. Ans: c Link To: The Anatomy of Stars Difficulty Level: Easy 6. The end products of fusion in the Sun's core are a. helium isotopes, protons, and gamma rays. b. hydrogen isotopes, photons, and infrared rays. c. helium ions, photons, and hydrogen isotopes. d. hydrogen ions, protons, and gamma rays. e. deuterium, photons, and gamma rays. Ans: a Link To: The Anatomy of Stars Difficulty Level: Easy 7. Approximately how long does it take the energy of the Sun to be transferred from the stellar core to the photosphere? a. one light-year b. many thousands of years c. 24 hours d. one month e. eight minutes Ans: b
Background image of page 2
Chapter 14 228 Link To: The Anatomy of Stars Difficulty Level: Easy 8. Which of the following affect the life of a star? a. gravitational force b. mass c. temperature d. fusion processes e. all of the above Ans: e Link To: The Life Cycles of Stars Difficulty Level: Easy 9. From what part of the electromagnetic spectrum is most of the Sun’s energy emitted? a. radio waves b .infrared waves c. visible light waves d. gamma rays e. microwaves Ans: c Link To: The Nature of Stars Difficulty Level: Easy 10. Which of the following satellite observatories could not detect the presence of a black hole? a. Compton Gamma Ray Observatory (GRO)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/23/2010 for the course NSET 101 taught by Professor Tulzs during the Spring '10 term at Point Park.

Page1 / 17

ch14 - Chapter 14 The Stars How much longer can the Sun...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online