Question

Where is most of the baryonic matter (ordinary matter) of the universe found?(1 point)
Responses

in comets and asteroids
in comets and asteroids

in dark matter and dark energy
in dark matter and dark energy

in planets and natural satellites
in planets and natural satellites

in interstellar gases and stars
Answer
How are the bars in barred spiral galaxies thought to have formed?(1 point)
Responses

merging
merging

primordial collapse
primordial collapse

slow evolution
slow evolution

separation
Answer
Which is a mark of a galaxy formed by collapse?(1 point)
Responses

uniformly young stars
uniformly young stars

same age stars
same age stars

a mix of young and old stars
a mix of young and old stars

abundant gas and dust
Answer
How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point)
Responses

The Milky Way has changed course to head toward Andromeda.
The Milky Way has changed course to head toward Andromeda.

Astronomers have observed their movements over time.
Astronomers have observed their movements over time.

All galaxies will collide at some point.
All galaxies will collide at some point.

The two galaxies have collided previously.
Answer
When parts of a gas cloud collapse, where does the material first form clumps?(1 point)
Responses

in less dense regions with more space between atoms
in less dense regions with more space between atoms

in less dense regions with little space between atoms
in less dense regions with little space between atoms

in denser regions with more space between atoms
in denser regions with more space between atoms

in denser regions with little space between atoms
Answer
Under the influence of gravity, over time the dense central part of a galaxy will do what?(1 point)
Responses

stay as it is, forces balanced
stay as it is, forces balanced

expand
expand

contract
contract

stay the same size but spin more slowly
stay the same size but spin more slowly
Answer
Over time, how will the distribution of matter in a galaxy cluster change?(1 point)
Responses

Clumps of material will become larger and the spaces between them smaller.
Clumps of material will become larger and the spaces between them smaller.

Clumps of material will become smaller and the spaces between them larger.
Clumps of material will become smaller and the spaces between them larger.

Clumps of material will become larger and the spaces between them larger.
Clumps of material will become larger and the spaces between them larger.

Clumps of material will become smaller and the spaces between them smaller.
Clumps of material will become smaller and the spaces between them smaller.
Answer
Which factors are most likely to affect whether a galaxy will evolve by merging with a second galaxy? Select the two correct answers.(1 point)
Responses

its distance from the other galaxy
its distance from the other galaxy

its size compared to that of the other galaxy
its size compared to that of the other galaxy

its proportion of gas compared to that of the other galaxy
its proportion of gas compared to that of the other galaxy

its age compared to that of the other galaxy
Answer
Which method of galaxy formation is expected to dominate far in the future?(1 point)
Responses

primordial collapse
primordial collapse

merging
merging

slow evolution
slow evolution

spreading
Answered by GPT 3.5
in interstellar gases and stars
Answered by GPT 3.5
merging
Answered by GPT 3.5
uniformly young stars
Answered by GPT 3.5
Astronomers have observed their movements over time.
Answered by GPT 3.5
in denser regions with little space between atoms
Answered by GPT 3.5
contract
Answered by GPT 3.5
Clumps of material will become larger and the spaces between them smaller.
Answered by GPT 3.5
its distance from the other galaxy and its size compared to that of the other galaxy
Answered by GPT 3.5
merging