science

The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related.Which of these observations of Barnard’s Star is most likely accurate? *

Captionless Image
A Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
B Barnard’s Star is less bright than the sun, has a surface temperature above 3,800K, and is red.
C Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow. D Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow.
D Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow.

2. The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way? *
1 point
A Earth is a part of this galaxy.
B Many more stars exist outside the galaxy.
C The stars in the center of the galaxy are extremely small.
D The center of the galaxy consists of a dense cluster of stars.
3.The picture shows sand used to make a model of a galaxy. In the model, each grain of sand best represents: *

A a comet
B a black hole
C an asteroid
D a star

4. Which unit of measurement do astronomers use when measuring the distance between two stars found in the Milky Way? *
1 point
A meter
B light-year
C kilometer
D astronomical unit

5.The sun is a mid-sized, main sequence star. What stage is next in the life cycle of the sun? *
1 point
A red giant
B blackhole
C white dwarf
D neutron star

6. Why does Earth get more energy from the sun than from all the other stars in the universe combined? *
1 point
A The sun is much larger than the other stars.
B The sun is much hotter than the other stars.
C The sun is much more dense than the other stars.
D The sun is much closer than the other stars.

7. Astronomers study many different kinds of objects in our Solar System. Which of the following best describes a difference between comets and asteroids? *
1 point
A Comets orbit planets, and most asteroids orbit the Sun.
B Comets are hot balls of gas, and asteroids are made mostly of ice.
C Comets are made mostly of ice, and asteroids are made mostly of rocks.
D Comets orbit the Sun between Mars and Jupiter, and asteroids form patterns in the sky.

8. Why are light-years used to measure distances in space? *
1 point
A The speed of light is slower in space.
B The speed of light is faster than time.
C Distances in space constantly change.
D Distances between stars are very large.

9. In November 2013 an object orbiting the sun seemed to disappear behind the sun. When a satellite did not detect the object, astronomers thought that the object had been destroyed when it passed close to the sun. However, when another satellite detected a small, bright object with a fan-shaped tail, astronomers proposed that the object was not destroyed.What type of object were astronomers most likely observing? *
1 point
A Comet
B An Asteroid
C A meteor
D A nebula

10. Main sequence stars that are much larger and more massive than our Sun will become Super Giants. They will end their life cycle as *
1 point
A supernova
B nebula
C white dwarf
D neutron star or black hole

  1. 👍 2
  2. 👎 2
  3. 👁 1,346
  1. My answers:
    A
    A
    D
    B
    A
    D
    C
    D
    A
    D

    1. 👍 11
    2. 👎 0
  2. is reb correct

    1. 👍 6
    2. 👎 0
  3. reb is correct ijust took it 4 connexu

    1. 👍 4
    2. 👎 0
  4. Reb is correct

    1. 👍 2
    2. 👎 0
  5. Thanks reb! I got a 💯

    1. 👍 2
    2. 👎 0
  6. thanks reb i got a 100%

    1. 👍 1
    2. 👎 0
  7. Thanks everyone got a 100%

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science!!!

    1. Why can certain stars sometimes be identified as eclipsing binary stars? A. They are brighter than any single star B. They are all white dwarfs C. They become dimmer at regular intervals D. They are cool red stars

  2. Science help ms sue.

    Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the

  3. Science

    1. how do scientists classify stars ? (1point ) A. by size , distance , and color b. by size , distance, and brightness c. by color , brightness, and distance d. by size , brightness, and temperature

  4. Astronomy

    Is the Hertzsprung-Russell diagram still a valid instrument in studying stars, given that it is over 100 years old? and why?

  1. Science

    Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the

  2. Astronomy

    1. What color are stars that are very hot and very bright? A. Red B. Blue C. White D. Yellow 2. During the contraction of a protostar, density increases and ______ rises. A. Nuclear energy B. Dust C. Temperature D. Outflow 3. What

  3. Science please help :)?

    3. which if the following factors determines how long a star will live ? ( 1point ) A . star’s color b. the star’s mass**** c. the star’s diameter d. the star’s distance from the sun 4 . which of the following causes

  4. science

    A protostar has a high enough ___ to become a star. A. Volume B. Mass C. Temperature D. Brightness Is the answer B? Thank you

  1. science !!

    1. how do scientists classify stars? by size distance and color by size distance and brightness by color brightness and distance by size brightness and temperature 2. which of The following factors determines how long is Star will

  2. Science

    6. Which of the following happens to the temperature of gases as they reach the top of the sun's convection zone? a. it increases b. it decreases*** c. it does not change d. there is no way to tell what happens 7. Which of the

  3. science

    1. The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related.Which of these observations of Barnard’s Star is most likely accurate? * 1 point

  4. Calculus 1

    A variable star is one whose brightness alternately increases and decreases. For one such star, the time between periods of maximum brightness is 4.7 days, the average brightness (or magnitude) of the star is 5.3, and its

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