Stellar Remnants

A neutron star will have a radius closest in size to which of the following?

• The sun

• The Earth

• A small city

• A basketball

The Schwarzschild radius of a body is _______________________

• The distance from its center at which nuclear fusion ceases

• The distance from its surface at which an orbiting companion will be broken apart

• The maximum radius that a neutron star can have before it collapses

• The radius of a body at which its escape velocity equals the speed of light

Tags

NGSS.HS-PS2-4

What makes supernovas explode?

• It can happen because a chicken nugget decides it wants some sauce and it falls into a nuclear reactor and creates a supernova.

• It can happen from a Moon stealing mass from a companion star and then stealing so much it explodes into a million pickles.

• It can also happen when two neighboring galaxies collide.

• It can happen when a star comes to the end of its life and has no more nuclear energy and some mass flows to the core until it can’t withstand its own gravitational force and collapses in on itself and blows up

Since most stars orbit in pairs, if one of the stars is a white dwarf, it can steal material from the other star and explode as a Type ____ supernova.

• II

• 3G

• 1a

• X

Some highly magnetized Neutron stars also rotate very rapidly, generating electromagnetic radiation from the poles. We call these ____.

• quasars

• pulsars

• black holes

• gamma ray bursts

Tags

NGSS.HS-PS4-3

When a Red Giant's outer atmosphere drifts away it is known as a ____________.

• planetary cloud

• White Dwarf cloud

• planetary nebula

• expanding nebula

More massive stars continue to fuse elements in their cores all the way up to ________.

• silicon

• iron (Fe)

• carbon

• plutonium

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

When a super-massive star dies, the result is known as a:

• Type 1a supernova

• Type 1b supernova

• Type 1c supernova

• Type II supernova

How are magnetars formed?

• From neutron stars after undergoing a supernova.

• From super-massive black holes.

• From stellar black holes.

• From star quakes.

What would happen to the solar system if our Sun was replaced by a black hole with equal mass?

• The planets would all be sucked in by the black hole and destroyed

• The planets orbits would decrease by a factor of 1/2

• The planets orbits would not be affected

• The outer planets would be pulled in, while the inner planets would be ejected due to a higher orbital velocity

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4