Universe

The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?

• Earth is a part of this galaxy
• Many more stars exist outside the galaxy
• The stars in the center of the galaxy are extremely small.
• The center of the galaxy consists of a dense cluster of stars.

Based on this diagram which type of stars would belong to spectral class M and have the lowest luminosity?

• Main Sequence Stars
• Giants
• Super Giants
• White Dwarfs

Based on this diagram which type of stars would belong to spectral class G and have the highest luminosity?

• Main Sequence Stars
• Giants
• Super Giants
• White Dwarfs

Tags

NGSS.HS-ESS1-3

Use the Hertzsprung Russell Diagram to answer the following question.  How do the characteristics of Vega and Barnard's Star compare?

• Vega is cooler and less bright than Barnard's Star.
• Vega is hotter and brighter than Barnard's Star.
• Vega is cooler and brighter than Barnard's Star.
• Vega is hotter and less bright than Barnard's Star.

Based on this diagram which type of stars would belong to spectral class B and have the lowest luminosity?

• Main Sequence Stars
• Giants
• Super Giants
• White Dwarfs

The universe has may different components. Which list places four components of the universe in the most likely order from smallest to largest.

• Planets, Stars, Galaxies, Asteroids

• Asteroids, Stars, Planets, Galaxies

• Galaxies, Stars, Planets, Asteroids

• Asteroids, Planets, Stars, Galaxies

A ball of gas that gives off heat and light.

• Nebula

• Star

• Galaxy

• Asteroid

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

A group of stars held together by gravity.

• Nebula

• Solar System

• Galaxy

• Star

Tags

NGSS.MS-ESS1-2

A cloud of dust and gas where multiple stars are born.

• Nebula

• Galaxy

• Solar System

• Universe

A word that describes the collection of all known things in space.

• Solar System

• Galaxy

• Nebula

• Universe