science

. Locate the Sun on the HR Diagram. The best way to describe the Sun in comparison to other stars would be * 1
point brighter than most stars.
average brightness compared to most stars.
dimmer than most stars.
2. Sirius B was an important star in ancient Egypt and was used to warn for floods on the Nile River. Is Sirius B brighter or dimmer than the Sun? * 1 point Brighter Dimmer 3.
Betelgeuse is a red,
the giant star that guided caravans across the deserts of Arabia in the coolness of night.
Betelgeuse is considered a _________. * 1 point hot star. cooler star. 4. A white dwarf star has a surface temperature of about _______ degrees Celsius. * 1 point 3,000 5,000 to 10,000 20,000 to 50,000 5. Magnitude means brightness. Absolute magnitude tells us how bright a star is. What is the brightness of a blue star in the upper left corner of your H-R Diagram? * 1 point 20 to 15 10 to 5 0 to -5 -15 to -20 6. What is the brightness of a red star in the lower right corner? * 1 point 20 to 15 10 to 5 0 to -5 -15 to -20 7. What is the brightness of the Sun, a yellow star? * 1 point - 20 -10 5 15 8. The super giant stars in the upper right corner are very bright. Their brightness is ________. * 1 point 20 to 15 10 to 5 0 to -5 -10 to -20 9. A bright star will have a negative number for its absolute magnitude (brightness). * 1 point True False 10. The apparent magnitude of stars is how bright they look to us. We are on the earth looking up into space. Which would look brighter? * 1 point Small Star Big Star 11. Which would look brighter? * 1 point Close Star Far Away Star 12. Stars that are not very hot (cooler) but very bright are called ________. * 1 point Giants Dwarfs 13. Stars that are very hot, but not very bright are called ________. * 1 point Giants Dwarfs 14.Giants and dwarfs are believed to be _________ stars. * 1 point old young 15. What size star is the Sun? * 1 point White Dwarf Medium Main Sequence Giant Supergiant 16. With the use of the Hubble Space Telescope, scientists recently discovered a giant runaway star. It is 90 times larger than the sun and is very hot and blue-white in color. Why does the sun appear to be brighter than this runaway star when viewed from Earth? * 1 point The sun is a different color than the runaway star. The sun is older than the runaway star. The sun is closer to Earth than the runaway star. The sun is made of different elements than the runaway star. 17. The Hertzsprung-Russell diagram below shows how the Sun is classified among the stars. A star that is several thousand times brighter than the sun with a temperature lower than 4,000 K would be classified as * 1 point a main-sequence star in spectral class B a supergiant in spectral class K a main-sequence star in spectral class K or M a white dwarf in spectral class B 18. Two stars are identified on the Hertzsprung-Russell diagram. Based on the diagram below, how do the characteristics of Star 1 and Star 2 compare? * 1 point Star 1 is cooler and less bright than Star 2. Star 1 is hotter and brighter than Star 2. Star 1 is cooler and brighter than Star 2. Star 1 is hotter and less bright than Star 2. 19. A Hertzsprung-Russell diagram is shown below. Based on this diagram, which type of stars would belong to spectral class M and have the highest luminosity? * 1 point White dwarfs Main-sequence stars Giants Supergiants 20. Barnard’s Star is about 5.9 light-years from the sun. The star has an approximate temperature of 2,800 K. Based on the diagram below, what spectral class does Barnard’s Star belong to? * 1 point Spectral class O Spectral class B Spectral class A Spectral class M

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. Shalee ^~^

    1) Which of the following statements about the sun's structure is true? The sun has a solid surface The sun has an interior and an atmosphere The sun's interior is similar to the Earth's; it has a core, mantle, and crust*** The

  2. Science

    Locate the sun on the hr diagram. The best way to describe the sun in comparison to other stars would be

  3. English

    "The sun was shining on the sea, Shining with all his might: He did his very best to make The billows smooth and bright — And this was odd because it was The middle of the night. The moon was shining sulkily, Because she thought

  4. Science

    1. Which of the following about the suns structure is true? A.The sun has a solid surface. B. The sun has an interior and an atmosphere. * C.The sun's is similar to Earth's; it has a core, mantle, and crust. D. The sun's outermost

  1. physics

    Rank the average gravitational forces from greatest to least between:A. Sun and Mars.B. Sun and the Moon.C. Sun and Earth. i answer b,c,a and its wrong

  2. math

    At a given time, Saturn was 9.1 x 10 to the 8th miles from the sun and the earth was 9.3 x 10 to the 7th miles from the sun. by what distance is one planet closer to the sun than the other planets?

  3. Science

    1) Which of the following statements about the sun's structure is true? The sun has a solid surface The sun has an interior and an atmosphere The sun's interior is similar to the Earth's; it has a core, mantle, and crust*** The

  4. Science

    1. Which of the following statements about the sun's structure is true? A. The sun has a solid surface. B. The sun has an interior and atmosphere. C. The sun's interior is similar to Earth's; it has a core, mantle, and crust. D.

  1. Physics

    1. Gunter, the weightlifter, can lift a 230.0 kg barbell overhead on Earth. The acceleration due to gravity on the sun is 274 m/s2. 2. a. Would the barbells be heavier on the sun or on the Earth. heavier on the sun b. How much (in

  2. Math

    The period of revolution of a planet around the sun is the time it takes for the planet to complete one orbit of the sun. The period, P years, is give by Kepler's third law P^2=D^3, where D is the average distance from the sun in

  3. L.A

    2) After reading the poem, what can you conclude about the moon? A. She is mad at the sun because she is tired and he is keeping her up. B. She thinks the night is her territory, not the sun’s. *** ?? C. She is glad the sun is

  4. AP Physics Halley's Comet

    Halley's comet orbits the sun roughly once every 76 years. It comes very close to the surface of the Sun on its closest approach. Estimate the greatest distance of the comet from the sun. Is it still in the Solar System? What

You can view more similar questions or ask a new question.