Star Cycle

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The stable period of a star’s life cycle is called...

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Main Sequence

Front

What stage in a star's life cycle is described by gravity pulling gases and dust particles in space toward one another, squeezing them into a smaller space, and the temperature at the center rising high enough for nuclear fusion of hydrogen to begin?

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The birth of a star

Front

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

Front

What determines the color of a star?

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It's temperature

Front

A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands 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 explode 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

Front

A relatively small, dense star at the end of its life cycle, which generates little or no energy and has contracted to its densest state. What stage in the life cycle does this describe?

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White Dwarf