Indiana Science HS-ESS1-1
ScienceGrades 9–12Earth and Space Science
The Standard
Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun’s core to release energy in the form of radiation. [Clarification Statement: Emphasis is on the energy transfer mechanisms that allow energy from nuclear fusion in the sun’s core to reach Earth. Examples of evidence for the model include observations of the masses and lifetimes of other stars, as well as the ways that the sun’s radiation varies due to sudden solar flares (“space weather”), the 11-year sunspot cycle, and non-cyclic variations over centuries.]
Indiana Academic Standards for Science (2023) · Earth’s Place in the Universe
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students build a model of the sun’s life using observations of other stars as evidence. They show fusion releasing energy in the core, then trace that energy through the sun and across space to Earth.
What Mastery Looks Like
- A student puts the sun’s formation, main-sequence phase, red giant phase, and white dwarf stage in order. Their model marks fusion in the sun’s current core and shows energy moving outward by radiation and convection before sunlight crosses space. They use star mass and lifetime data to support the timeline.
Common Misconceptions
- Students may say the sun burns like a fire or that fusion happens at its surface. They may think solar flares power the sun’s light or that sunlight needs air to reach Earth. Some expect the sun to explode as a supernova rather than become a white dwarf.
How to Assess It
- On an exit ticket, ask students to sketch the sun’s life stages, trace energy from its core to Earth, and cite one observation of other stars that supports their timeline.
Lesson moves
Ways to Teach It
Give pairs paper circles for the sun’s life stages and yarn for energy paths; have them label fusion, radiation, and convection.
On a half-sheet, ask students why energy can cross empty space to Earth but hot gas cannot.
Give teams star mass and lifetime cards; have them sort by mass, compare lifetimes, and place the sun among them.
Show a sunspot image and a NOAA aurora alert; ask students how solar activity changes what reaches Earth without changing core fusion.
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