LG1: Life Cycle of Stars & Element Formation

All stars begin their life cycle as a ______.

• supernova

• Nebula which is a cloud of dust and gas

• protostar

• Black hole

Use the emission spectra.

What elements are in the unknown?

• Xenon and helium

• argon and oxgen

• Neon and Xenon

• Helium and oxygen

Has a higher temperature during it's main sequence phase.

• Low mass stars

• High mass stars

Spends a longer time in it's main sequence phase.

• Low mass stars

• High mass stars

Creates elements heavier than Fe

• Low Mass Stars

• High Mass Stars

Process stars make light and energy

• Fission

• Fusion

• Confusion

• Diffusion

True or False

Stars fuse heavier elements into lighter elements.

• True

• False

Fusion means .......

• join heavier elements to lighter elements

• stick elements together randomly

• join lighter elements into heavier elements

Which phase of the stars life cycles have the greatest luminosity?

• Blue giants

• Red Super Giants

• White Dwarfs

• Main Sequence Stars

Our sun is a .........

• Yellow Super Giant

• Main Sequence Star

• White Dwarf

• Blue giant