Exploring Galactic Structures

What are the three main types of galaxies?

• Barred spiral, elliptical, spiral

• Irregular, barred spiral, lenticular

• Spiral, elliptical, irregular

• Lenticular, spiral, dwarf

Which type of galaxy is characterized by a flat, rotating disk?

• Elliptical galaxy

• Spiral galaxy

• Irregular galaxy

• Lenticular galaxy

What is the main component of a spiral galaxy?

• Comets and asteroids

• Planets and moons

• Stars and dark matter

• Gas and dust

What type of galaxy is known for its irregular shape?

• Irregular galaxy

• Spiral galaxy

• Lenticular galaxy

• Elliptical galaxy

Which galaxy type is typically the largest?

• Elliptical galaxies

• Lenticular galaxies

• Spiral galaxies

• Irregular galaxies

What is the central region of a galaxy called?

• center

• hub

• core

• nucleus

What are the dense regions of stars in a galaxy known as?

• galactic cores

• supernova remnants

• star clusters

• nebulae

What is the term for the halo of dark matter surrounding galaxies?

• Galactic Core

• Cosmic Web

• Stellar Nebula

• Dark Matter Halo

Which type of galaxy has a bulge and a disk but no spiral arms?

• Spiral galaxy

• Lenticular galaxy

• Elliptical galaxy

• Irregular galaxy

What is the primary difference between elliptical and spiral galaxies?

• Elliptical galaxies have distinct arms like spiral galaxies.

• Spiral galaxies are older than elliptical galaxies.

• Elliptical galaxies are more luminous than spiral galaxies.

• Elliptical galaxies lack structure and have older stars, while spiral galaxies have distinct arms and younger stars.