Podcast
Questions and Answers
What is the approximate age of the sun as a star?
What is the approximate age of the sun as a star?
- 100,000 years
- 1 billion years
- 4.6 million years
- 4.6 billion years (correct)
How many stars are estimated to be in the sky, according to the text?
How many stars are estimated to be in the sky, according to the text?
- Over 100 billion stars (correct)
- Around 10 billion stars
- Over 50 billion stars
- Over 200 billion stars
What is the sun's role in relation to life on Earth?
What is the sun's role in relation to life on Earth?
- Source of heat
- Source of water
- Source of energy (correct)
- Source of air
What did people in ancient times believe the sun was?
What did people in ancient times believe the sun was?
How big is the sun in comparison to Earth?
How big is the sun in comparison to Earth?
What caused the collapse of the nebula described in the text?
What caused the collapse of the nebula described in the text?
How far away is the giant interstellar cloud of dust and gas mentioned in the text?
How far away is the giant interstellar cloud of dust and gas mentioned in the text?
What happens in the sun's core that enables it to become a star?
What happens in the sun's core that enables it to become a star?
During which stage of the sun's life is gravity pressure equal to the force of fusion energy in the core?
During which stage of the sun's life is gravity pressure equal to the force of fusion energy in the core?
What will happen to the Earth in a billion years due to the increase in the sun's energy?
What will happen to the Earth in a billion years due to the increase in the sun's energy?
In 3.5 billion years, what dramatic effect will occur on Earth due to the sun's increased brightness?
In 3.5 billion years, what dramatic effect will occur on Earth due to the sun's increased brightness?
What process will cause the sun to engulf the planets Mercury and Venus in about 6 billion years?
What process will cause the sun to engulf the planets Mercury and Venus in about 6 billion years?
What will the sun become near the end of its life after fusing all helium into carbon?
What will the sun become near the end of its life after fusing all helium into carbon?
Which phase of the sun's life allows it to fuse heavier nuclei like helium into carbon?
Which phase of the sun's life allows it to fuse heavier nuclei like helium into carbon?
What happens to the outer regions of a white dwarf as it cools down?
What happens to the outer regions of a white dwarf as it cools down?
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