Georgia S6E1.a

Science6th GradeEarth and Space Science

The Standard

Ask questions to determine changes in models of Earth's position in the solar system, and origins of the universe as evidence that scientific theories change with the addition of new information.

Georgia Standards of Excellence for Science · Obtain, evaluate, and communicate information about current scientific views of the universe and how those views evolved.

Teacher's field guide

What This Standard Means

What Students Need to Do

Students compare older and current models of Earth’s place in space. They ask questions about how telescope observations, planetary motion, redshift, and background radiation led scientists to revise models.

What Mastery Looks Like

Students can explain why the geocentric model was replaced by the heliocentric model using specific evidence. They can connect new evidence to changes in explanations of the universe’s origin.

Common Misconceptions

Students may think a scientific theory is only a guess or that changing a model means science failed. They may also think the Sun is the center of the universe or that the Big Bang was an explosion into empty space.

How to Assess It

Give students geocentric and heliocentric diagrams. Ask: “What observation would help you decide which model better explains planetary motion, and why?”

Lesson moves

Ways to Teach It

  1. Use a lamp, globe, and toy planets to build geocentric and heliocentric models, then list observations each model can or cannot explain.

  2. Write three questions Galileo could ask after observing Jupiter’s moons, then explain how one question challenges the geocentric model.

  3. Sort evidence cards into geocentric, heliocentric, or expanding universe groups, then defend each choice with a partner.

  4. Read a short Webb Telescope news release and identify what new evidence could refine a model of the early universe.

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Printable S6E1.a Worksheet

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