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Tenth Grade (Grade 10) Astronomy Questions

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Grade 10 Small Bodies and Dwarf Planets
Which part of the comet is on the opposite side of the comet from the Sun?
  1. coma
  2. tail
  3. nucleus
  4. head
Grade 10 The Moon
Why does the Moon exert a greater influence on Earth's tides than the Sun?
  1. It is bigger
  2. It is closer
  3. It is cooler
  4. It is magnetic
Grade 10 Small Bodies and Dwarf Planets
Gravity does not influence the motions of celestial objects at all.
  1. True
  2. False
Grade 10 Universe
Messier 95 is classified as a SBb galaxy using the Hubble sequence. Which of the following best describes the classification of Messier 95?
  1. a spiral galaxy
  2. an elliptical galaxy
  3. an irregular galaxy
  4. a barred spiral galaxy
Grade 10 Outer Planets
Which gas produces a green-blue to blue color of Uranus and Neptune?
  1. oxygen
  2. carbon dioxide
  3. methane
  4. sulfur dioxide
Grade 10 The Moon
How much of the Moon is continuously lit up?
  1. 20 percent
  2. 30 percent
  3. 40 percent
  4. 50 percent
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 Universe
Kenji is including this image in his astronomy paper. Which of the following should Kenji use as a title for the image?
Hubble Sequence #2
  1. Star Chart
  2. Hubble Sequence
  3. Hertzsprung–Russell Diagram
  4. Harvard Spectral Classification
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.
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