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Life Cycle of a Star

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Emily Fairbanks

on 26 May 2016

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Transcript of Life Cycle of a Star

Life Cycle of a Star
By: Emily Fairbanks
The nebula is stage one
The nebula is and interstellar a cloud of hydrogen, dust, and helium gas, and plasma
A nebula is composed of dust, hydrogen, helium, and other gases.
It is formed when a gravitational fall of gas inside the interstellar medium. As the material falls under its own weight, huge stars may form in the center makes gases

The protostar is stage 2 of the stars wonderful cycle
A protostar is a clump of iterstellar gas that is that fall, making a hot dense core and makes a star once nuculer fusion can occur in the core.
A protostar is composed of gas, helium, and and hydrogen gas.
Moloculer clouds have molecules in them. The protostar stage lasts about 10 billion years and sun sized star is shook by a galaxy collision or supernova. This causes each fragment to fall unber gravity to make protostar.

The red giant is the last stage of the star life cycle
A red giant is a star that has a supply of hydrogen in the core. with no hydrogen in the core, hydrogen left at the core of a star begins to have a nuculer reaction that causes it to keep burning. the core releases energy which expands it. then it cools down which causes it to be red
this is stage 3 of the star cycle
A star is a big ball of gas that is held together by gravity. The center of the star, the core, is super duper hot. Some of the energy is realeased, which makes a star glow
a star is made of hydrogen and gasses
STars are made by dense concentrations of gasses and dust. Those are very cold. all of the tempatures join together to make a star
White Dwarf
White Dwarfs are the final stage of the stars life cycle
A white dwarf is also called a degenerate dwarf is a remnat made mainly of electric dengenrate matter, A white dwarf is very dense it's mass is comparable to the Sun while its own volume is compared to the Earth
A white dwarf is mainly made of oxygen, hydrogen, and corbon
A white dwarf is created when the red giants mass begins to generate and the core begins to fuse on hydrogen and then the oxygen will build up in the center . After a star sheds the outer layer of itself and then then it will leave its core, which is the remant of the white dwarf.
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