Real life 'Death Star' observed destroying planets in its own solar system

Real life 'Death Star' observed destroying planets in its own solar system

Assessment

Interactive Video

Science, Physics

11th Grade - University

Hard

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Stars shine by converting hydrogen into helium through nuclear fusion. Once a star exhausts its nuclear fuel, it expands into a red giant, which can convert helium into carbon. When helium is depleted, the red giant contracts into a white dwarf, a dense remnant of the star's core. The gravitational pull of a white dwarf is strong enough to disrupt nearby planets. Changes in a star's mass can alter its orbit, potentially causing planets to move closer and be torn apart by the white dwarf's gravity.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What process allows stars to shine by converting hydrogen into helium?

Nuclear fission

Nuclear fusion

Chemical reaction

Gravitational collapse

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to a star after it uses up its nuclear fuel?

It remains unchanged

It explodes as a supernova

It turns into a red giant

It becomes a black hole

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What element do red giants convert helium into?

Iron

Nitrogen

Oxygen

Carbon

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a characteristic of a white dwarf?

It is extremely dense

It is very large

It is a source of new stars

It has a weak gravitational pull

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can happen to a planet that orbits too close to a white dwarf?

It remains unaffected

It becomes a new star

It is pushed away

It disintegrates