Podcast
Questions and Answers
What is a protostar?
What is a protostar?
- A middle-aged star that is gathering mass from its parent stellar nebula.
- A fully formed star that has stopped accumulating mass.
- A star that is about to explode in a supernova.
- A very young star that is still gathering mass from its parent stellar nebula. (correct)
What initiates nuclear fusion in a star?
What initiates nuclear fusion in a star?
- Decrease in core temperature.
- Core becoming denser and hotter. (correct)
- Loss of mass from the star.
- Radiation from neighboring stars.
What differentiates massive stars from average stars?
What differentiates massive stars from average stars?
- Average stars have shorter lifespans.
- Average stars are larger in size than massive stars.
- Massive stars have longer lifespans.
- Massive stars burn through their nuclear fuel more quickly. (correct)
What is the defining characteristic of a red giant?
What is the defining characteristic of a red giant?
What powers a star to maintain a stable size and temperature?
What powers a star to maintain a stable size and temperature?
When does nuclear fusion ignite in a star?
When does nuclear fusion ignite in a star?
What is the final evolutionary phase of a star that has exhausted its nuclear fuel and has become a white dwarf?
What is the final evolutionary phase of a star that has exhausted its nuclear fuel and has become a white dwarf?
Which type of neutron stars emit beams of electromagnetic radiation and are known as pulsars?
Which type of neutron stars emit beams of electromagnetic radiation and are known as pulsars?
What marks the conclusion of the luminous energy-producing aspect of a star's existence?
What marks the conclusion of the luminous energy-producing aspect of a star's existence?
During a supernova, what process leads to the formation of heavy elements like gold, silver, and uranium?
During a supernova, what process leads to the formation of heavy elements like gold, silver, and uranium?
Which type of star experiences gravitational collapse, leading to an explosive rebound known as a supernova?
Which type of star experiences gravitational collapse, leading to an explosive rebound known as a supernova?
What do red super giants have in common with red giants in terms of nuclear fusion?
What do red super giants have in common with red giants in terms of nuclear fusion?
