Astronomy Review

Which is NOT a type of galaxy?

• Elliptical
• Spiral
• Oblong
• Irregular

In ____shift, the galaxies appear _____ in color b/c they are moving away from us.

• blue; red
• red; red
• red; blue
• blue; blue

If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...

• Moving towards the Earth
• Moving away from the Earth
• This is a trick question that cannot be answered
• It isn't a star, it is a very large blueberry.

Which description is considered most accurate regarding what actually happened during the Big Bang?

• Two galaxies collided causing an immense explosion as stars crashed into one another

• All of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded into what is now stars, planets, galaxies, matter, and energy.

• All matter emerged from a massive black hole at the center of the universe.

• Parts of the sun were ripped off by massive internal explosions and were thrown into space where they cooled to become other things, like plants, comets, and other galaxies.

What does the Red-shift tell us about the universe

• the universe is expanding
• the universe is contracting
• the big bang is false
• nothing

Main sequence stars have what in common?

• They are primarily fusing hydrogen into helium

• They are red in color

• They are larger than most other stars

• They are the hottest stars

A process in stars where two Hydrogen atoms combine to form Helium and release energy.

• Nebula 
• Nuclear Fusion 
• Supernova 
• Gravity 

A force which tries to pull two objects toward each other.

• Supernova 
• Nebula 
• Planetary Nebula 
• Gravity 

How does Cosmic Microwave Background Radiation support the Big Bang Theory?

• Microwaves are found everywhere in the universe.

• Microwaves were only created at the time of the Big Bang

• Microwaves are useful in our everyday lives

• Microwave radiation is produced by stars

Which of the following is capable of making elements heavier than iron?

• Proto-stars

• Stars like our Sun

• Supernova explosions by massive stars

• Red Giant Stars