Unit 1.1 Review
Quiz by Laikyn Skipper
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11 questions
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- Q1Which of the following happens because of the Doppler Effect?As light moves away from an observer, it appears red, due to red shiftAs light moves away from an observer, it appears blue, due to blue shiftAs sound moves away from an observer, it sounds higher pitchedAs sound moves away from an observer, it sounds lower pitched30s
- Q2Which of the following correctly describes the events of the Big Bang Theory?The universe began as the size of an atom. Energy began to spread out and the universe was hot and dense. Energy cooled into matter. Atoms began to form. Nuclear fusion began to form stars.The universe began as the size of an atom. A large explosion occurred, leaving energy throughout the cold universe. The first galaxies were formed as atoms grew larger. Stars began to form from galaxies.The universe began as the size of a grapefruit and was cold and dense. Once it grew large enough, atoms began to form into planets. Galaxies formed from the the accumulation of planets.30s
- Q3Which of the following is not evidence for the Big Bang TheoryRed shift- evidence that the universe is slowly shrinkingRed shift- evidence that the universe is expandingCMBR- energy left over from the Big BangHubble's Law- describes the dominant motion of the universe as a smooth expansion30s
- Q4Which of the following is the first stage of a star's life cycle?supernovastellar nebulawhite dwarfprotostar30s
- Q5Which of the following is the correct order of a high mass star's life cycle?stellar nebula, protostar, star, supergiant, supernova, neutron star or black holeplanetary nebula, white dwarf, protostar, star, red giant, supernova, black holeprotostar, star, red giant, super giant, planetary nebula, neutron star, black holestellar nebula, protostar, star, red giant, planetary nebula, white dwarf, black dwarf30s
- Q6Which of the following correct describes trends seen on the Hertzsprung-Russell Diagram?As temperature increases, brightness decreases. The hottest dimmest stars are blue.As temperature increases, brightness increases. The brightest, hottest stars are red.As temperature increases, brightness increases. The brightest, hottest stars are blue.As temperature decreases, brightness increases. The coolest, brightest stars are blue.30s
- Q7Which of the following correctly compares and contrasts white dwarfs and red giants?White dwarfs are hotter and dimmer than red giants. Both are part of a low/medium mass star life cycle.White dwarfs are hotter and brighter than red giants. Both are part of a low/medium mass star life cycle.White dwarfs are hotter than red giants. Both have the same brightness.White dwarfs are brighter than red giants. Both have the same temperature.30s
- Q8Which of the following correctly explains the process of nuclear fusion?process that combines two smaller nuclei into one larger nucleus.all of theseprocess that forms starsprocess that forms all elements in the universe30s
- Q9Which of the following BEST explains the importance of nuclear fusion?it is a renewable resource on Earthit creates all elements in the universeit allows stars to generate heat and lightit creates elements smaller than iron30s
- Q10According to the Big Bang Theory, when did the universe begin?13.7 million years ago4.6 million years ago13.7 billion years ago4.6 billion years ago30s
- Q11Which of the following BEST explains why most stars are considered main sequence stars?Most stars go through nuclear fusion extremely slowly, so it takes billions of years for it to get largerStars did not begin forming until 5 billion years ago and it takes approximately 10 billion years to grow to a supergiant or red giantIt takes about 10 billion years for a star to become a red giant or supergiant and the universe is only 13.7 billion years old30s
