Chapter 22 TEST_AST

ALL neutron stars are pulsars, but not all pulsars are neutron stars.

• True

• False

Short duration gamma-ray bursts are explained as the merger of two neutron stars.

• True

• False

At the event horizon of a black hole, time stops.

• True

• False

Neutron stars are formed by

• the star formation process.

• type II supernovae

• type I supernovae

• mass transfer in binary star systems

Tags

NGSS.HS-ESS1-3

In a neutron star, the core is

• constantly expanding and contracting.

• no longer rotating.

• made of compressed neutrons in contact with each other.

• primarily iron and silicon.

Two important properties of young neutron stars are

• extremely rapid rotation and a weak magnetic field.

• no rotation and a weak magnetic field.

• extremely rapid rotation and a strong magnetic field.

• no rotation and a strong magnetic field.

Neutron stars have:

• very strong bipolar magnetic fields.

• no relation to pulsars.

• period of days or weeks.

• none of the answers are correct.

Tags

NGSS.HS-ESS1-3

An object more massive than the Sun, but roughly the size of a city, is a:

• neutron star.

• supernova remnant.

• brown dwarf.

• red dwarf.

• white dwarf.

Pulsars:

• generally form from 25 solar mass stars.

• are the cause of gamma-ray bursts.

• spin very rapidly when they are young.

• emit radio waves in all directions.

Tags

NGSS.HS-ESS1-3

What compelling evidence links pulsars to neutron stars?

• Both pulsars and neutron stars can be found in globular star clusters.

• Only a small, very dense source could rotate that rapidly without flying apart.

• Pulsars are known to evolve into neutron stars.

• Pulsars are always found in binary systems with neutron stars.