Astronomy Review

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

Which star is the coldest?

• yellow star
• red star
• orange star
• blue star

Our sun is currently in this star stage.

• Protostar
• Super Red Giant
• Main Sequence
• Red Giant

In the diagram given, what happens as we move to the left?

• Stars Get Larger
• Stars get Colder
• Stars get hotter

A supernova is the explosion of a dying

• high-mass star.
• low-mass star.
• medium-mass star.
• protostar.

A star is born when

• a nebula expands.
• helium and oxygen combine.
• nuclear fusion starts.
• a protostar begins to cool.

All stars begin as part of a large cloud of gas and dust called

• a nebula.
• a black hole.
• a protostar.
• elliptical galaxy.

Our solar system is located in the 

• Milky Way galaxy.
• Andromeda galaxy.

A(n) _____ galaxy has a characteristic pinwheel shape.

• spiral
• elliptical
• open cluster
• globular

A galaxy that does not have a regular shape is classified as a(n) _____ galaxy.

• spiral
• open cluster
• globular
• irregular