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
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: *
1 point
Captionless Image
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
my ANswers for all of them are
1b
2c
3d
4a
5c
6c
7b
8d
9c
10a
A
A
D
B
A
D
C
D
A
D
No diagram. Cannot copy and paste here.
well i already found the ones with the diagram help with the other ones please
You can make your choices in the question with asterisks (***). This will make it easier for us to evaluate.
2. Disagree
3. Even without the picture, I would agree.
4. Disagree
5. Disagree
6. Disagree
7. Disagree
8. Agree
9. Disagree
10. Disagree
It looks like you are guessing. Try Googling the significant terms. You can find the information you desire more quickly, if you use appropriate key words to do your own search.
http://www.hackcollege.com/blog/2011/11/23/infographic-get-more-out-of-google.html
Got 2/10 DO NOT USE THESE ANWSERS
ANSWERS *
Here are the correct answers for each question:
1. The correct answer is A. Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
2. The correct answer is A. Earth is a part of this galaxy.
3. The correct answer is D. Each grain of sand represents a star.
4. The correct answer is B. light-year.
5. The correct answer is C. white dwarf.
6. The correct answer is D. The sun is much closer than the other stars.
7. The correct answer is C. Comets are made mostly of ice, and asteroids are made mostly of rocks.
8. The correct answer is D. Distances between stars are very large.
9. The correct answer is A. Comet.
10. The correct answer is A. supernova.
Based on the correct answers, your responses were mostly incorrect. Here are the correct answers for each question:
1. A
2. A
3. D
4. B
5. C
6. D
7. C
8. D
9. A
10. A