Nuclear Fusion Stars Flashcards

1
Q

What’s the first stage of a stars life cycle

A

Protostar

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2
Q

What’s the second stage of a stars life cycle

A

Main (stable) sequence star

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3
Q

When the stars life cycle splits they can either be super red giant or a

A

Red giant star

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4
Q

After the red giant star it becomes what

A

White dwarf

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5
Q

After the white dwarf stage the comes next

A

Black dwarf

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6
Q

What’s the next stage after the red super giant star

A

Supernova

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7
Q

After the supernova the next two stages are either a …..…………….or a …..……………

A

Either neutron star or a black hole

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8
Q

What stage is the sun in at the moment

A

Main sequence star (stable)

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9
Q

Stars about the same size as our sun start out as a

A

Red giant star

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10
Q

Stars about the same size as our sun end As a

A

Black dwarf

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11
Q

Stars that are bigger than our sun start out as a

A

Red super giant star

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12
Q

Stars that are much bigger than our sun end As a …..…………… or a …..……………

A

Neutron star or black hole

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13
Q

Stars about the same size as our sun that are main sequence star and then red giant stars and then …..……………Black dwarf

A

White dwarf

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14
Q

Stars bigger than our sun are main sequence stars then red supergiant stars and then …..…………… and then neutron star or black hole

A

Supernova

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15
Q

…..…………… Pulls dust and gas together

A

Gravity

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16
Q

Stars form from massive clouds of …..……………

A

Gas and dust

17
Q

stars form when it is hot enough for

A

Nuclear reactions to start

18
Q

Nuclear reactions releases energy and keeps the star …..……………

A

Hot

19
Q

During the main sequence stage stars are very stable because the

A

Forces are balanced

20
Q

Forces making the star balanced are

A

Expanding gas pressure and the stars gravity

21
Q

When a star has used up all its hydrogen in nuclear fusion it then

A

Makes other fusion reactions with all other elements up to iron

22
Q

Heavy elements found in the sun and planets of the solar system suggest

A

That the Solar system was formed from supernovas in the past

23
Q

The life cycle of a star dependeds on its

A

Size

24
Q

Which stage are elements heavier than iron formed

A

Supernova