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The Life Cycle Of Stars

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by

Pedro Morales

on 13 March 2014

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Transcript of The Life Cycle Of Stars

The Life Cycle Of Stars
Types of stars
The four different types of stars are Protostars,main Sequence stars, Giants , Super Giants, and White Dwarfs.
What is a Protostar
A protostar is a star that begins its life as a ball of gas and dust.
white dwarfs
Giants and Supergiants
When a main-sequence star uses all of the hydrogen in its core, helium begins to fuse, the center of the star shrinks, and the atmosphere of the star grows very large and cools. The star may become a red giant or red supergiant, such as Antares.
Main-Sequence Stars
After a sunlike star forms, it enters the main sequence, the longest stage of its life cycle.
Learning Goal
Stars vary in mass, size, brightness, color, and temperature, and these variations are related to the star's life cycles.
Questions
In the final stage of its life cycle,a sunlike star becomes a white dwarf. A white dwarf is a small hot and dim star that is the leftover center of a red giant.
1.What is an example of a red giant or red supergiant?
Answer 1
A good example of a red giant or red supergiant is Antares.
2. As a protostar gets denser it gets hotter and it will evetually reach the temperature of what?
Answer 2
As a protostar gets denser it gets hot enough to reach 10 million degrees Celcius.
3. How do people classify stars
Answer 3
Stars are classified by their mass, size, color, temperature, and brightness.
By: Erik Flores,Pedro Morales,& Malik Shaibi
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