Quiz on Spiral Galaxies

Where is the Sun located in the galaxy shown in the image?

• At the center

• In one of the spiral arms

• Outside the galaxy

• In the halo

What is the primary component of the spiral arms in a galaxy?

• Gas and dust

• Dark matter

• Black holes

• Neutron stars

What is the shape of the galaxy shown in the image?

• Spherical

• Irregular

• Spiral

• Elliptical

What is the likely position of the Sun in the galaxy shown?

• Near the galactic center

• In the outer halo

• In the spiral arms

• Outside the galaxy

What is the primary component of the spiral arms in a galaxy?

• Gas and dust

• Dark matter

• Black holes

• Neutron stars

Which of the following is a common feature of spiral galaxies?

• No defined structure

• Spiral arms

• Uniform brightness

• Lack of gas

What term is used to describe the average distance between the Earth and the Sun?

• Light year

• Astronomical unit

• Parsec

• Kilometer

Which of the following is approximately equal to one astronomical unit?

• 150 million km

• 1 million km

• 300 million km

• 50 million km

What does the term "astronomical unit" help scientists measure?

• Time

• Distance

• Mass

• Temperature

Which of the following is NOT a correct representation of an astronomical unit?

• 150 million km

• 93 million miles

• 1 light year

• Distance from Earth to Sun