Astronomy
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Iron
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| show | As a white dwarf
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| What is a planetary nebula? | show 🗑
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| show | Its mass
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| Which of the following sequences correctly describes the stages of life for a low-mass star? | show 🗑
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| What happens to the core of a star after it ejects a planetary nebula? | show 🗑
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| Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? | show 🗑
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| show | by converting hydrogen to helium.
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| Which of the following comparisons between low-mass stars and high-mass stars is true? | show 🗑
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| Which of the following statements about open clusters is true? | show 🗑
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| show | Most stars in the cluster are yellow or reddish in color.
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| The age of stars in a cluster can be determined by | show 🗑
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| show | More massive stars live much shorter lives than less massive stars.
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| Which of the following statements comparing open and globular star clusters is not true? | show 🗑
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| All stars are born with the same basic composition, yet stars can look quite different from one another. Which two factors primarily determine the characteristics of a star? | show 🗑
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| show | 90%
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| What happens when a star like the sun exhausts its core hydrogen supply? | show 🗑
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| show | Hydrogen fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.
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| show | carbon.
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| What happens after the helium flash? | show 🗑
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| show | a type of hydrogen fusion that uses carbon, nitrogen, and oxygen atoms as catalysts
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| What types of stars end their lives with supernovae? | show 🗑
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| show | either a neutron star or a black hole
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| Identify the correct sequence of life events for a high mass star. | show 🗑
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| show | The Sun will turn into a white dwarf and cool off forever.
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| show | Their core temperatures are too low.
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| During which of the following phases of life is a star's pressure and gravity out of equilibrium? | show 🗑
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| show | The core shrinks while the rest of the star expands.
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| The main source of energy for a star as it grows in size to become a red giant is ________. | show 🗑
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| show | The sudden onset of helium fusion in the core of a low-mass star
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Created by:
lizhopper2
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