Life Cycle of Stars
CONCEPTUALUnderstand the basics of a star’s life cycle: stars are born in clouds of gas and dust (nebulae), shine for millions or billions of years by fusing hydrogen, and eventually die — massive stars explode as supernovae while smaller stars fade into white dwarfs
Mastery Evidence
- Describe that stars form from clouds of gas and dust called nebulae
- State that stars produce energy by fusing hydrogen into helium in their cores
- Explain that massive stars end in a supernova explosion while smaller stars shrink to become white dwarfs
Assessment Prompt
“Can [child] explain that stars are born, live for a very long time, and eventually die — and that really big stars can explode at the end?”
Prerequisites2
- Why the Sun Looks BrightestsoftAges 9—11
- The Sun is a starhardAges 7—9
Show full prerequisite tree
- Why the Sun Looks Brightest soft
Understanding star brightness and distance helps contextualise different stages of star life
- The Sun is a star hard
Must know the Sun is a star before understanding why it appears brighter than other stars
- Why seasons change soft
Curriculum daylight/seasons observation supports exploratory Sun/Moon/stars identification
- Naming the Planets soft
Relating daylight length to time of year draws on orbit and solar system vocabulary
- Days, Weeks, Months & Years soft
Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
- Ordering Events in Time hard
Understanding days/months/years builds on sequencing events chronologically
- Sun, Moon & Stars hard
Must know the Sun and stars before learning about planets and the solar system
- Why seasons change soft
Curriculum daylight/seasons observation supports exploratory Sun/Moon/stars identification
- Naming the Planets soft
Relating daylight length to time of year draws on orbit and solar system vocabulary
- Days, Weeks, Months & Years soft
Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
- Ordering Events in Time hard
Understanding days/months/years builds on sequencing events chronologically
- Why seasons change soft
Curriculum daylight/seasons observation supports exploratory Sun/Moon/stars identification
- Naming the Planets soft
Relating daylight length to time of year draws on orbit and solar system vocabulary
- Days, Weeks, Months & Years soft
Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
- Ordering Events in Time hard
Understanding days/months/years builds on sequencing events chronologically
- Sun, Moon & Stars hard
Must know the Sun and stars before learning about planets and the solar system
- Why seasons change soft
Curriculum daylight/seasons observation supports exploratory Sun/Moon/stars identification
- Naming the Planets soft
Relating daylight length to time of year draws on orbit and solar system vocabulary
- Days, Weeks, Months & Years soft
Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
- Ordering Events in Time hard
Understanding days/months/years builds on sequencing events chronologically
Unlocks1
- Where Elements Come FromhardAges 12—14