What causes a supernova?(1 point)

force of gravity

How are nebulae and stars related? Select the three correct answers.(2 points)

Responses

Stars form from nebulae.
Stars form from nebulae.

Stars are pulled toward nebulae.
Stars are pulled toward nebulae.

Nebulae explode to form stars.
Nebulae explode to form stars.

Nebulae are found inside stars.
Nebulae are found inside stars.

Nebulae form from stars.
Nebulae form from stars.

Stars explode to form nebulae.

Stars form from nebulae.

i need 3 correct answers

1. Stars form from nebulae.

2. Nebulae explode to form stars.
3. Nebulae form from stars.

How can a planetary nebula be identified? Select the two correct answers.(1 point)

Responses

dark area
dark area

central star remnant
central star remnant

diffuse edges
diffuse edges

spherical shape

central star remnant

spherical shape

What does it mean to characterize a nebula as diffuse?(1 point)

Responses

Its edges have clear boundaries.
Its edges have clear boundaries.

Its edges do not have clear boundaries.
Its edges do not have clear boundaries.

It reflects only non-visible radiation.
It reflects only non-visible radiation.

It reflects only visible radiation.

Its edges do not have clear boundaries.

The correct answer is "force of gravity." A supernova is a catastrophic explosion that occurs at the end of a star's life. It happens when a massive star runs out of nuclear fuel and can no longer generate enough energy to counteract the force of gravity, causing the star to collapse under its own weight. This collapse generates an intense shockwave that leads to the explosion of the star, releasing an enormous amount of energy and creating a bright and powerful supernova.