Stages in the Formation of Stars
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Questions and Answers

Which stage represents a star's birth place?

  • Red Giant
  • Protostar
  • Main Sequence Star
  • Nebula (correct)

What is a T Tauri Star?

  • A young, low weight star undergoing gravitational contraction (correct)
  • An early stage of star formation where nuclear fusion is yet to begin
  • A stage where the core temperature is enough to start fusion reactions
  • A star formed during the later stages of evolution as it runs out of hydrogen fuel

What occurs at the Main Sequence Star stage?

  • Start of fusion reactions, fusing hydrogen atoms to form helium atoms (correct)
  • Gravitational contraction of the star
  • Formation of a star's birth place
  • Fusion of helium molecules at the core

During which stage does a star run out of hydrogen fuel at its core?

<p>Red Giant (D)</p> Signup and view all the answers

What prevents the core from collapsing as a star expands?

<p>Fusion of helium molecules at the core (D)</p> Signup and view all the answers

At which stage does fusion of carbon begin?

<p>Red Giant (A)</p> Signup and view all the answers

What is the result of the iron fusion reaction in stars?

<p>It causes the core to collapse (D)</p> Signup and view all the answers

What is the outer layer of gas and dust that is lost when a star changes from Red Giant to White Dwarf called?

<p>Planetary Nebula (D)</p> Signup and view all the answers

What are the inner planets also known as due to their composition?

<p>Terrestrial planets (B)</p> Signup and view all the answers

What are the other four planets in our solar system mainly composed of?

<p>Helium and hydrogen (A)</p> Signup and view all the answers

What is Pluto now classified as in our solar system?

<p>Dwarf planet (D)</p> Signup and view all the answers

How many moons does Saturn have?

<p>About 53 (C)</p> Signup and view all the answers

What word means 'companion' and refers to natural objects orbiting around planets?

<p>Satellite (A)</p> Signup and view all the answers

How long does the moon take for both its rotation and revolution around the earth?

<p>~27 days (A)</p> Signup and view all the answers

What is believed to be the result of a giant impact called 'big splat'?

<p>'Big splat' led to the formation of the moon (D)</p> Signup and view all the answers

What causes the white dwarf to become a black dwarf?

<p>Stop emitting light (C)</p> Signup and view all the answers

What is the significance of a T Tauri Star in the formation of stars?

<p>It represents a stage between a protostar and a low mass main sequence star (B)</p> Signup and view all the answers

At which stage does a star run out of hydrogen fuel at its core and begin fusion of helium?

<p>Red Giant (D)</p> Signup and view all the answers

What prevents the core from collapsing as a star expands and fuses helium into heavier elements?

<p>Helium fusion (C)</p> Signup and view all the answers

During which stage does fusion of carbon begin in the core of a star?

<p>Main Sequence Star (D)</p> Signup and view all the answers

What represents the birth place of a star where nuclear fusion has not yet begun?

<p>Protostar (C)</p> Signup and view all the answers

At which stage does a star's core temperature become sufficient to start fusion reactions, fusing hydrogen atoms to form helium atoms?

<p>Main Sequence Star (A)</p> Signup and view all the answers

What is the result of the implosion caused by the iron fusion reaction in massive stars?

<p>Production of supernovae (A)</p> Signup and view all the answers

Which celestial body obtains the brightness of 100 million suns for a short time?

<p>Supernovae (C)</p> Signup and view all the answers

What is the moon's status in terms of size among the natural satellites in the solar system?

<p>Fifth largest (D)</p> Signup and view all the answers

What is suggested to be the result of the giant impact called 'big splat'?

<p>Formation of the moon (A)</p> Signup and view all the answers

At which stage does a star run out of hydrogen fuel at its core?

<p>Red Giant stage (B)</p> Signup and view all the answers

What is a dwarf planet in our solar system?

<p>&quot;Pluto&quot; (B)</p> Signup and view all the answers

What is the outer layer of gas and dust lost when a star changes from Red Giant to White Dwarf known as?

<p>&quot;Planetary Nebula&quot; (D)</p> Signup and view all the answers

What is the composition of the other four planets in our solar system mainly made up of?

<p>&quot;Helium and hydrogen&quot; (D)</p> Signup and view all the answers

During which stage of a star's life does it stop emitting light and become a black dwarf?

<p>&quot;White Dwarf&quot; stage (C)</p> Signup and view all the answers

What prevents the core from collapsing as a star expands?

<p>Radiation pressure (C)</p> Signup and view all the answers

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