Life Cycle of a Star

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The longest period of a star’s life is called...

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Main Sequence

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What stage in a star's life cycle is described by gravity pulling gases and dust particles toward one another, squeezing them into a smaller space, leading to rising temperatures and eventually nuclear fusion of hydrogen?

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The birth of a star

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Hotter stars appear to be what color?

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Blue

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Cooler stars appear to be what color?

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Red

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What determines the color of a star? Options: It's size, It's temperature, It's composition, They are all the same color

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It's temperature

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A star at the stage in its life cycle when it stops burning hydrogen, begins burning bigger elements, and grows much bigger to a large, low-density star. What stage in the life cycle does this describe?

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Red Giant or Red Supergiant

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What fuel do stars use? Options: Oxygen, Hydrogen, Carbon, Iron

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Hydrogen

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In a large mass star, the temperature reaches more than 100 billion degrees. The repulsive forces between the iron nuclei cause a massive explosion sending the star’s mass into space in a ....

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Supernova

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Larger stars (stars with more mass) have a longer life cycle.

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False

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A relatively small, dense star at the end of its life cycle, which generates little energy creating a faint white light and has contracted to its densest state. What stage in the life cycle does this describe?

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White Dwarf