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Life Cycle of Stars
Transcript of Life Cycle of Stars
How this was created
Stars form when enough dust and gas clump together because of gravitational forces.
A STAR'S ELEMENT
A stars elements are oxygen, carbon, nitrogen, helium, and hydrogen.
Description of a Star
Description of a Nebula
A nebula is a cloud of dust and gas.
How this was created
Many nebula stars form from the gravitational collapse of gas in the interstellar medium.
It is composed of hydrogen and helium.
Energy of a Protostar
Equilibrium for a star is when the balance between gravity pulling atoms toward the center and gas pressure pushing heat and light away from the center are equal.
Description of a Protostar
A protostar is a very young star that is still gathering mass from its parent molecular cloud. The protostellar phase is the earliest one in the process of stellar evolution. For a one solar-mass star it lasts about 1,000,000 years.
Life Cycle of a Star
A Nebula's ELEMENT
HOW IT IS FORMED
A forming star is a PROTOSTAR!
Description of a Red Giant
A red giant star is a dying star in the last stages of stellar evolution. In only a few billion years, our own sun will turn into a red giant star, expand and engulf the inner planets, possibly even Earth
The Elements of a RED GIANT
Helium, carbon, oxygen, nitrogen.
How it was Formed
Red Giant star is formed when a star like our sun, or one larger, runs out of its hydrogen fuel. Inside a star, hydrogen atoms are combined together to form helium atoms.
The White DWARF
of the White Dwarf
A white dwarf, also called a degenerate dwarf, is a stellar remnant composed mostly of electrons. A white dwarf is very dense its mass is comparable to that of the Sun, while its volume is comparable to that of Earth.
Elements of a White Dwarf
Hydrogen and helium.
What White Dwarfs are made of
White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.