Stars Expectations: D2.3, D2.5,.

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Presentation transcript:

Stars Expectations: D2.3, D2.5,

How do Stars Differ? Size Mass Brightness (Luminosity) Composition Temperature Colour

Different Stars

More Massive Stars

Life Cycle of Stars Nebula: birthplace of a star, made of gas and dust

Nebula

The life of a star is determined by its mass The life of a star is determined by its mass. The more massive the star, the faster its rate of nuclear fusion and therefore a shorter life.

Hertzsprung-Russell Diagram

Classwork Worksheet Read p. 370-373 Read p. 375-382 Answer page 373 #1-3, 5, 7-9 Read p. 375-382 Answer page 382 #3-4, 6, 7, 9

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