Quiz about Stellar Explosions & Remnants

Question 1

Term for "new star" that occurs in mass-transfer binary and/or white dwarf companion stars.

Accepted Answer

stella nova

Answer

supernova

Answer

pulsar

Answer

neutron star

Question 2

As material is added to the accretion disk, _____ may reach a temporary fusion point.

Accepted Answer

temperatures

Answer

pressures

Answer

electron degeneracy

Answer

matter

Question 3

Contact binaries may allow a white dwarf star to repeat

Accepted Answer

flashes.

Accepted Answer

explosions.

Answer

electron degeneracy pressure.

Answer

Roche lobe overload.

Question 4

A supernova occurs when a _____ star runs out of fuel (or overloads) and explodes.

Accepted Answer

single

Accepted Answer

massive

Answer

sun-like

Answer

double

Question 5

A ____ star with a mass of 1.4 suns may go supernova (I) if too much material accretes.

Accepted Answer

white dwarf

Answer

red dwarf

Answer

red giant

Answer

neutron

Question 6

Type II supernovae occur when a star with at least ____ times the mass of our sun explodes.

Accepted Answer

8

Answer

1.4

Answer

1.5

Answer

3

Question 7

Supernova 1987(a) occurred in this nearby galaxy 186,000 light years away.

Accepted Answer

Large Magellanic Cloud (LMC)

Answer

Andromeda

Answer

Small Magellanic Cloud (SMC)

Answer

M16

Question 8

Supernovae regularly occur in galaxies throughout the visible Universe.

Accepted Answer

True

Answer

False

Question 9

Type II supernovae explosions may leave behind a

Accepted Answer

neutron star

Accepted Answer

black hole

Accepted Answer

pulsar

Answer

white dwarf

Question 10

Neutron stars are formed when gravity squeezes electrons & _____ into neutrons in a supernova.

Accepted Answer

protons

Answer

isotopes

Answer

quarks

Answer

matter

Question 11

Neutron stars are between 1.4 - 3.2 solar masses and are compacted into an area

Accepted Answer

about the size of a city.

Answer

the size of Earth.

Answer

about the size of a large country.

Answer

the size of the Sun.

Question 12

One teaspoon of neutron star material can weigh more than

Accepted Answer

Mt. Everest.

Answer

a planet.

Answer

a star.

Answer

a black hole

Question 13

_____ are rapidly spinning neutron stars that are known as "lighthouses" in space.

Accepted Answer

Pulsars

Answer

Quasars

Answer

White dwarfs

Answer

Black holes

Question 14

Millisecond pulsars spin many times per second and have

Accepted Answer

very strong magnetic fields.

Answer

slowed down a lot over the years.

Answer

sped up over the years.

Answer

very weak magnetic fields.

Question 15

Pulsars were first detected in the 1960's by astronomers using radio telescopes.

Accepted Answer

True

Answer

False

Question 16

A black hole will form if the original star has at least _____ solar masses before collapse.

Accepted Answer

eight

Answer

four

Answer

six

Answer

ten

Question 17

The "cutoff mass" between a neutron star and a black hole is about ____ solar masses.

Accepted Answer

3.2

Answer

1.4

Answer

4.4

Answer

6.0

Question 18

The area or boundary in which nothing can return from a black hole is called

Accepted Answer

the event horizon.

Answer

the singularity.

Answer

Interstellar.

Answer

the path of no return.

Question 19

The ____ radius describes the size of the event horizon (which is black hole mass dependent).

Accepted Answer

Schwarzschild

Answer

Hawking

Answer

inner

Answer

outer

Question 20

There may be ____ of black holes in our galaxy alone - with Cygnus X-1 being the closest.

Accepted Answer

millions

Answer

billions

Answer

hundreds

Answer

thousands

Stellar Explosions & Remnants

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