The Life and Death of Stars Flashcards
What is a Light-Year?
The distance that light travels in a year.
What is a Star?
A huge sphere of very hot gas that emits light and radiation.
What powers the Sun?
Nuclear Fusion.
What are the Layers of Stars?
The Corona, Photosphere, Convective Zone, Radiative Zone, and the Core.
What is a Star’s color based on?
It’s temperature.
What color are the hottest stars?
Blue.
How are stars formed?
From nebulas.
What is a Red Giant?
The expansion of a star during supernova before it explodes.
What is a Supernova?
The explosion of a star at its death.
What is a White Dwarf?
A change in a star that occurs when a Red Giant has no more gas to burn and cools down and shrinks.
What is a Neutron Star?
A very small but massive star.
What is a Pulsar?
A star that emits pulsating radio waves.
What is a Black Hole?
A strange phenomenon in which there is extreme gravity that sucks everything in.
How are Black Holes formed?
They’re formed by stars with extreme masses and gravity that collapse in on themselves.
