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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Life Cycle of a Star

Science · Space Systems & Earth's History · conceptual

Describe the life cycle of a star from nebula through main sequence to its end state (white dwarf, neutron star, or black hole depending on mass), and relate the life cycle to the origin of elements heavier than hydrogen

What mastery looks like

  • Describes the main stages in the life cycle of a star similar to the Sun: nebula → protostar → main sequence → red giant → planetary nebula → white dwarf
  • Explains that more massive stars end as a supernova followed by a neutron star or black hole
  • States that nuclear fusion inside stars produces heavier elements from hydrogen and helium

Check your understanding

If Life Cycle of a Star was told that the iron in their blood was forged inside a star that exploded billions of years ago, could they explain the life cycle of a star and how elements are made inside stars?

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