Tag: the stars

Questions Related to the stars

As the age of star increases

physics life cycle of stars evolution and end stages of stars the stars stars

  1. Helium quantity increases

  2. Helium quantity decreases

  3. Helium quantity does not

    change

  4. Helium, Hydrogen both

    quantities increases

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Correct Option: A

What can we learn about a star from a life track on an H-R diagram?

physics life cycle of stars evolution and end stages of stars the stars stars

  1. how long ago it was born

  2. when it will die

  3. where it is located

  4. what surface temperature and luminosity it will have at each stage of its life

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Correct Option: D
Explanation:

The HertzsprungRussell diagram, abbreviated HR diagram, HR diagram or HRD, is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures. More simply, it plots each star on a graph measuring the star's brightness against its temperature (color).

______________are the result of exploding stars that initially are more than about eight times the sun's mass.

physics life cycle of stars evolution and end stages of stars the stars stars

  1.  stars

  2. black hole

  3. supernova

  4. none of these

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Correct Option: C

Which of the following is the stage where a massive star explodes and releases a lot of energy?

physics life cycle of stars evolution and end stages of stars the stars stars

  1. Red supergiant

  2. Blackhole

  3. Main sequence

  4. Supernova

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Correct Option: B
Explanation:

Stars with very large masses can become black holes. A black hole releases a huge amount of gravitational energy, as material swirls toward its event horizon. This energy produces a jet of particles that streams over a distance of 300,000 light-years.

The constellation of stars appear at different positions in the sky at different times during night mainly ________________________.

physics life cycle of stars evolution and end stages of stars the stars stars

  1. Because earth rotates about its axis

  2. Because Earth revolves round the sun

  3. Because of optical illusion

  4. Because celestial bodies are changing their positions all the time

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Correct Option: A