Question 1

Blue stars in the disc of the galaxy are called ______.&#10;A) Pop I&#10;B) Pop II&#10;C) Pop III&#10;D) Pop IV

Accepted Answer

Blue stars in the disc of the galaxy are referred to as Population I stars. These stars are relatively young, have high metal content, and are found in the arms of spiral galaxies.

Question 2

In astronomy, elements heavier than helium are called ______.&#10;A) gas&#10;B) metal&#10;C) solid&#10;D) liquid

Accepted Answer

In astronomy, all elements heavier than helium are collectively referred to as "metals," a classification that stems from the field's focus on hydrogen and helium, the most abundant elements in the universe.

Question 3

Stars that are pure hydrogen and helium and have not been found yet (and maybe never will):&#10;A) Pop 1&#10;B) Pop II&#10;C) Pop III&#10;D) Pop IV

Accepted Answer

Population III stars are theoretical stars thought to be composed almost entirely of hydrogen and helium, formed from the primordial matter from the Big Bang. They have not yet been observed directly.

Question 4

The earliest type of stars in the galaxy were&#10;A) Population I stars.&#10;B) Population II stars.&#10;C) Population III stars.&#10;D) Red Dwarf stars.

Accepted Answer

Population III stars are considered the first generation of stars formed in the universe. They were made almost entirely of hydrogen and helium, with virtually no heavier elements, and are thought to have been massive, leading to short lifespans and ending as supernovae, which then seeded the universe with heavier elements.

Question 5

Two galaxies merging is called ________.

Accepted Answer

The answer of Two galaxies merging is called ________....

Question 6

The most ancient stars in our Milky Way are _____ years old.

Accepted Answer

The answer of The most ancient stars in our Milky...

Question 7

The large Magellanic Cloud is a satellite of the Milky Way.

Accepted Answer

The Large Magellanic Cloud is indeed a satellite galaxy of the Milky Way, orbiting our galaxy.

Question 8

Computers today cannot model stellar formation and motions in our galaxy.

Accepted Answer

Computers today are capable of modeling stellar formation and motions in our galaxy using advanced simulations and computational astrophysics techniques.

Deck 72: Stars of the Milky Way