Astronomy Quiz For Science Freaks

If the theory that novae happen in close binary systems is exact, then novae should

Repeat after some interval

Occur in regions of star formation

Not occur in old star clusters

All be visual binaries

Correct! Wrong!

A brown dwarf is

A stage of a star's life prior to the white dwarf stage.

The final fate of stars like the Sun, but not less massive stars.

The final fate of all stars.

A warm starlike object that has too little mass to suppor fusion in its core.

Correct! Wrong!

Hubble's constant H0 , describes

The time it takes a galaxy to move twice as far away from us

The speed at which galaxies are moving away from us

The size of the universe

The rate of expansion of the universe

Correct! Wrong!

As a high-mass main-sequence star evolves off the main sequence, it supports a _______ on the HR diagram

Nearly vertical path

None of the above answers is correct

Roughly horizontal path

Path of constant radius

Correct! Wrong!

A Cepheid star changes in luminosity because

The star is too massive to be stable

The star rotates too quickly

The outer envelope of the star pulsates

The entire star pulsates from its core to its surface

Correct! Wrong!

The Oot Cloud is supposed to be

A grouping of asteroids and meteoroids between the orbits of Mars and Jupiter

A spherical cloud of cometary nuclei far beyond the Kuiper Belt

A flattened belt of cometary nuclei just beyond the orbit of Neptune

The circular disk of gas around the Sun's equator from which the planets formed

Correct! Wrong!

The destruction of the core of a high-mass star at the end of its life lasts nearly

One second

One year

One hour

One week

Correct! Wrong!

The massive planetesimals would have grown quicker than the smaller planetesimals because

There was more material located near them that could be accreted

The smaller planetesimals were covered by a layer of material that was lost during collisions

Their stronger gravity would pull in more material

They were moving faster in their orbits than the smaller planetesimals

Correct! Wrong!

The event horizon of a black hole is described as

The radius at which the escape speed equals the speed of light

The point at which shock waves emanate from the strong gravitational distortion the black hole creates in the fabric of spacetime

The radius of the original neutron star before it became a black hole

The point of maximum gravity

Correct! Wrong!

What are comets considered to be made of?

Hydrogen gas

Only rock

Mixture of ice, rock and dust

Only ice

Correct! Wrong!

Astronomy Quiz For Science Freaks

Thanks for Playing Quiz

Good Luck

If the theory that novae happen in close binary systems is exact, then novae should

A brown dwarf is

Hubble's constant H0 , describes

As a high-mass main-sequence star evolves off the main sequence, it supports a _______ on the HR diagram

A Cepheid star changes in luminosity because

The Oot Cloud is supposed to be

The destruction of the core of a high-mass star at the end of its life lasts nearly

The massive planetesimals would have grown quicker than the smaller planetesimals because

The event horizon of a black hole is described as

What are comets considered to be made of?

You need to login to view the result