Quiz on Globular Clusters and Open Clusters

What is a globular cluster primarily composed of?

• Dozens of young stars

• Very old stars

• Short-lived stars

• Randomly distributed planets

How are stars in open clusters typically distributed?

• Randomly throughout the halo of the galaxy

• In a plane of the galaxy

• Concentrated in the plane of the galaxy

• Outside the galaxy

What is the typical size of a globular cluster?

• Less than 50 light-years across

• A few hundred light-years across

• Exactly 100 light-years across

• More than a million light-years across

Which statement is true about open clusters?

• They are gravitationally bound and stable for billions of years

• They consist of very old stars

• They are generally not gravitationally bound and will disperse in a short period of time

• They are found outside the galaxy

Compared to open clusters, globular clusters are:

• Smaller in size and consist of young stars

• Larger in size and consist of young stars

• Smaller in size and consist of old stars

• Larger in size and consist of old stars

What is the approximate distance from the Sun to the Galactic center?

• 4 kpc

• 8 kpc

• 30 kpc

• 12 kpc

Which of the following is located in the Galactic halo?

• Sun

• Galactic bulge

• Emission nebula

• Globular clusters

What type of stars are indicated as being present in the vicinity of the Sun in the diagram?

• Red giants

• O, B stars

• White dwarfs

• Neutron stars

What is the term used to describe the dense and bright region at the center of the galaxy shown in the diagram?

• Galactic disk

• Galactic halo

• Galactic bulge

• Open cluster

What is the name given to the clusters of stars that are scattered around the galactic halo?

• Open clusters

• Emission nebulae

• Globular clusters

• Galactic clusters