Milky Way Galaxy

Which population of stars are located in the disk with nearly circular orbits??

• Population I stars

• Population II stars

Spiral Arms are easily seen because

• a dense molecular clouds

• atomic hydrogen clouds

• OB associations stars

• supernovas

What kind of galaxy is this?

• Ring

• Irregular

• Spiral

• Elliptical 

What type of galaxy do we live in?

• Spiral

• Elliptical

• Irregular

• Coaxial

When two stars are orbiting one another it's called ___

• an unary system

• a binary system

• a trinary system

• a doublet system

Tags

NGSS.HS-ESS1-4

Astronomers think that most stars are born in groups, called ___

• assemblages

• bundles

• clusters

• blobs

Tags

NGSS.HS-ESS1-3

Loosely bound collections of dozens or thousands of stars, usually in an irregular shape, are called ___

• hexadecimal star systems

• open clusters

• globular clusters

• nebulae

Which famous open cluster is located about 500 light years from Earth?

• Hyades

• Beehive Cluster

• Pleiades

• Butterfly Cluster

The Pleiades appear as a tightly-packed collection of stars, and a lot of people call them ___

• The Six Siblings

• The Seven Sisters

• The Eight Dancers

• The Nine Brothers

How old are most globular clusters?

• less than 200 million years old

• about a billion years old

• about 5 billion years old

• over ten billion years old