9.2 Classification of stars

Cards (20)

  • An Hertzsprung-Russell (H-R) Diagram is a plot that shows the relationship between a star's luminosity and its surface temperature
  • Match the star type with its characteristics:
    Main Sequence Stars ↔️ Moderate luminosity, moderate temperature
    Giant Stars ↔️ High luminosity, low temperature
    Dwarf Stars ↔️ Low luminosity, high temperature
  • What characterizes Main Sequence Stars?
    Fusing hydrogen in cores
  • H-R diagrams are useful for classifying and understanding the properties of different types of stars.

    True
  • What are the characteristics of Dwarf Stars?
    Low luminosity, high temperature
  • Supergiant Stars are nearing the end of their life cycle and have exhausted hydrogen fusion.

    True
  • An H-R diagram shows the relationship between a star's luminosity and its surface temperature
  • What type of stars represents the majority of stars on an H-R diagram?
    Main Sequence Stars
  • Giant Stars have low surface temperature and high luminosity

    True
  • Giant Stars have exhausted their hydrogen fuel and expanded
  • What is the primary characteristic that gives Supergiant Stars their extreme luminosity?
    Advanced evolutionary stage
  • Most stars lie on the Main Sequence of the H-R diagram.

    True
  • Main Sequence stars represent the stable hydrogen-burning phase of a star's life
  • Arrange the following star types based on their luminosity from lowest to highest:
    1️⃣ Dwarf Stars
    2️⃣ Main Sequence Stars
    3️⃣ Giant Stars
    4️⃣ Supergiant Stars
  • Giant Stars have high luminosity but low surface temperature
  • Match the star type with its position on the H-R diagram:
    Main Sequence Stars ↔️ Main diagonal band
    Giant Stars ↔️ Upper right corner
    Dwarf Stars ↔️ Lower left corner
    Supergiant Stars ↔️ Top right of H-R diagram
  • Main Sequence Stars have moderate luminosity and moderate temperature

    True
  • Main Sequence Stars are fusing hydrogen in their cores
  • Match the star type with its life cycle stage:
    Dwarf Stars ↔️ Early stage
    Giant Stars ↔️ Evolved stage
  • Order the star types based on increasing luminosity:
    1️⃣ Dwarf Stars
    2️⃣ Main Sequence Stars
    3️⃣ Giant Stars
    4️⃣ Supergiant Stars