Term
| How long is the life cycle of a star? |
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Definition
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| Which are the main elements in stars? |
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| The red giant phase is a prelude (or the prior state) to... |
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| Stars in our universe continue to change over their... |
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| When a star's core temperature climbs to millions of degrees _________ ________ begins. |
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| Some massive stars may eschew the typical path and explode in what is called a ... |
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| The luminosity of a star has to do with its... |
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| When navigators use a star for orientation, this has to do with _________ to direction. |
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Term
| What are the possible options after a supernova? |
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Definition
| Neutron stars or black holes |
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Term
| Red giants can lead to what kind of a formation? |
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Definition
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Term
| A stellar nebula can lead to either a _________ or a __________. |
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Definition
| Average star or a massive star. |
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Definition
| ... star systems that have two stars. |
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Definition
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| Give an example of a main sequence star. |
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Definition
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Term
| What are the characteristics of pulsars? |
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Definition
| They are rapidly rotating neutron stars which emit regular pulses and are highly magnetized. |
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Term
| When fusion occurs in a star, what elements are formed? |
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Definition
| Mostly hydrogen as well as some helium |
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Term
| What is the expected percentage of hydrogen and helium in stars? |
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Definition
| 75% hydrogen and 25% helium |
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Term
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Definition
| These are the light emissions given off by celestial objects such as stars. |
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Term
| What can star spectra be used for? |
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Definition
| Spectra can help determine what elements a star is made of. |
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Definition
| ...when a large star collapses in a massive nuclear explosion. |
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Definition
| This is a giant cloud of space dust that may someday form a star. |
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Definition
| It is possibly a great amount of packed matter resulting from a supernova. |
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Definition
| It is a star that may follow in the star life cycle after a planetary nebula. |
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