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Questions and Answers
How can the pulsating motions of the sun be observed?
How can the pulsating motions of the sun be observed?
- By studying the magnetic field variations on the sun's surface
- By measuring the UV radiation emitted by the sun
- By measuring the Doppler shifts of hydrogen lines across the face of the sun (correct)
- By analyzing the changes in sunspot activity
What is the study of the surface of the sun and sun-quakes called?
What is the study of the surface of the sun and sun-quakes called?
- Astronomy
- Astrophysics
- Helioseismology (correct)
- Cosmology
What causes 'earthquakes' (sun-quakes) to occur on the surface of the sun?
What causes 'earthquakes' (sun-quakes) to occur on the surface of the sun?
- Disturbances in the equilibrium of forces (correct)
- Large-scale solar flares
- Interactions with cosmic rays
- Changes in the sun's magnetic field
What is the mode of propagation for vibrations inside the sun?
What is the mode of propagation for vibrations inside the sun?
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What law is used to calculate the surface temperature of a planet circulating the sun?
What law is used to calculate the surface temperature of a planet circulating the sun?
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What does helioseismology study?
What does helioseismology study?
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What is used to measure the pulsating motions of the sun?
What is used to measure the pulsating motions of the sun?
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What is required for thermal equilibrium according to Stefan Boltzmann law?
What is required for thermal equilibrium according to Stefan Boltzmann law?
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How do vibrations inside the sun propagate?
How do vibrations inside the sun propagate?
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What method is used to observe pulsating motions of stars?
What method is used to observe pulsating motions of stars?
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