The Life and Death of Stars Flashcards

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1
Q

What is a Light-Year?

A

The distance that light travels in a year.

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2
Q

What is a Star?

A

A huge sphere of very hot gas that emits light and radiation.

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3
Q

What powers the Sun?

A

Nuclear Fusion.

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4
Q

What are the Layers of Stars?

A

The Corona, Photosphere, Convective Zone, Radiative Zone, and the Core.

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5
Q

What is a Star’s color based on?

A

It’s temperature.

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6
Q

What color are the hottest stars?

A

Blue.

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7
Q

How are stars formed?

A

From nebulas.

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8
Q

What is a Red Giant?

A

The expansion of a star during supernova before it explodes.

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9
Q

What is a Supernova?

A

The explosion of a star at its death.

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10
Q

What is a White Dwarf?

A

A change in a star that occurs when a Red Giant has no more gas to burn and cools down and shrinks.

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11
Q

What is a Neutron Star?

A

A very small but massive star.

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12
Q

What is a Pulsar?

A

A star that emits pulsating radio waves.

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13
Q

What is a Black Hole?

A

A strange phenomenon in which there is extreme gravity that sucks everything in.

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14
Q

How are Black Holes formed?

A

They’re formed by stars with extreme masses and gravity that collapse in on themselves.

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