chapter 11

• What are the types of galaxies mentioned?

  • Spiral
  • Elliptical
  • Irregular
• Name one example of a spiral galaxy.

  The Milky Way
• How many stars approximately does the Milky Way consist of?

  Approximately 200 billion stars
• Where is our solar system located within the Milky Way?

  At the edge of one of the spiral arms
• What characteristics are used to classify stars?

  • Colour
  • Size
  • Distance
  • Brightness
  • Temperature
• What is the name of the galaxy that is closest to the Milky Way?

  Andromeda
• What is the classification of the Milky Way galaxy?

  Medium large spiral galaxy
• What does the term "galaxy" refer to in the context of the universe?

  A system of stars, stellar remnants, interstellar gas, dust, and dark matter
• How do the characteristics used to classify stars help in understanding their properties?

  They provide insights into the star's lifecycle, composition, and potential for supporting life
• What is the name of the galaxy that contains the Small Magellanic Cloud?

  Large Magellanic Cloud
• Why is it important to classify stars?

  To understand their properties and behaviors in the universe
• How does the classification of galaxies differ from the classification of stars?

  Galaxies are classified based on their shape, while stars are classified based on their characteristics