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Tenth Grade (Grade 10) Stars Questions

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Grade 10 Stars
What is the most important factor when determining whether or not a star is going to explode in a supernova?
  1. The star's temperature.
  2. The star's color.
  3. The star's size.
  4. The star's elemental composition.
Grade 10 Stars
A star that we observe is accelerating away from us at an increasing rate. How does this effect the spectral light image?
  1. It interferes with equipment, creating blurry and unreadable images.
  2. It shifts all the spectral lines to the red side of the spectrum.
  3. It shifts all the spectral lines to the blue side of the spectrum.
  4. It compressed the sound that the spectral images make, making it sound higher pitched.
Grade 10 Stars
Spectral light images like the one below are used primarily to what?
  1. Identify elements that stars are composed of.
  2. See how big a star is.
  3. Tell how far away a star is.
  4. Identify how many planets a star has orbiting it.
Grade 10 Stars
If we are using the hubble telescope observe a star that is 20 million light years away, which of the following statements are true?
  1. The star moving away from us, so the light it emits is moving slower.
  2. The star has to be made out of hydrogen, otherwise we wouldn't be able to see it.
  3. We wouldn't be able to see a star that is 20 million light years away because the universe hasn't been around long enough for the light to reach us.
  4. The star could no longer exist, because the light we are seeing has travelled for 20 million years and the star could have died.
Grade 10 Stars
Max is including this image in his astronomy paper. Which of the following should Max use as a title for the image?
H-R Diagram With Text Labels - Small
  1. Star Chart
  2. Hubble Sequence
  3. Hertzsprung–Russell Diagram
  4. Harvard Spectral Classification
Grade 10 Stars
Why is the Hertzsprung-Russell Diagram, like the one below, significant to astronomers?
  1. Astronomers can know a star’s internal structure and evolutionary stage simply by determining its position in the diagram.
  2. Astronomers can use the diagram to tell how big a star is compared to the light it emits, and predict where new black holes will be formed.
  3. Astronomers can see the red shift in any star in the diagram, and use that information to tell how far away the star is.
  4. Astonomers can know from the chart if a star is similar in structure to our sun, and use it as a predictor for how likely that star will have another world like earth that we can inhabit.
Grade 10 Stars
Which of the following elements is formed in stars?
  1. curium
  2. einsteinium
  3. gold
  4. mendelevium
Grade 10 Stars

This question is a part of a group with common instructions. View group »

Suppose star F is plotted on the H-R diagram directly to the left of star C. Which statement is true for star F?
  1. It is hotter than star C.
  2. It is colder than star C.
  3. It is brighter than star C.
  4. It is dimmer than star C.
Grade 10 Stars
Stars spend most of their time in what section of the Hertzsprung-Russell diagram?
(Use the diagram from the previous question for reference).
  1. The top right, as giant or supergiant stars.
  2. In the main sequence, from the top left to the bottom right.
  3. In the bottom left, as white dwarfs.
  4. They spend their time equally in all sections of the diagram.
Grade 10 Stars

This question is a part of a group with common instructions. View group »

Barnard's Star is an M class star and has a brightness of about 4/10,000 of the Sun. Which is the best approximation of the star's temperature?
  1. 50,000°C
  2. 11,000°C
  3. 5,500°C
  4. 3,000°C
Grade 10 Stars

This question is a part of a group with common instructions. View group »

Which best describes stars located in region E of the diagram?
  1. dim and hot
  2. dim and cool
  3. bright and hot
  4. bright and cool
Grade 10 Stars

This question is a part of a group with common instructions. View group »

A spectral class K star is                 than a spectral class F star.
  1. hotter
  2. cooler
  3. brighter
  4. dimmer
Grade 10 Stars

This question is a part of a group with common instructions. View group »

Suppose star F is plotted on the H-R diagram directly above star C. Which statement is true about star F?
  1. It is hotter then star C.
  2. It is colder than star C.
  3. It is brighter than star C.
  4. It is dimmer than star C.
Grade 10 Stars

This question is a part of a group with common instructions. View group »

A spectral class B star is                 than a spectral class A star.
  1. hotter
  2. cooler
  3. brighter
  4. dimmer
Grade 10 Stars

This question is a part of a group with common instructions. View group »

Which best describes stars located in region A of the diagram?
  1. dim and hot
  2. dim and cool
  3. bright and hot
  4. bright and cool
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