The inner planets are small rocky worlds; the outer planets are much larger gas and ice giants.
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LIVE VISUAL LAB
Interactive teaching model • relationships are controlled; scale, distance or timing may be simplified and are labeled here.
The big idea
The inner planets are small rocky worlds; the outer planets are much larger gas and ice giants.
The warmer inner disk favored rock and metal, while colder outer regions allowed more ices and massive atmospheres.
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HOW SCIENTISTS KNOW
Density, spectra, gravity and spacecraft data reveal two broad planetary families.
WORDS TO OWN
terrestrial planetgas giantice giantdensity
!A COMMON WRONG MODEL
Inner Worlds and Outer Giants is only a name or picture to memorize.
✓REBUILD IT WITH EVIDENCE
Connect inner worlds and outer giants to the observable relationship, evidence and system described in the lesson.
A scientifically true sentence can still create a false picture. This repair makes the relationship visible.
Take learning into real life
Try it together
Lay out a Sun card and eight planet cards in order. Add one label for rock, gas or ice and one warning that the distances are compressed. Connect what you notice to inner worlds and outer giants using terrestrial planet and gas giant.
GREEN SAFETYOrdinary low-risk activity with normal caregiver awareness.
01TALKWhat do you predict before we try it?02LOOKWhat changed? What stayed the same?03EXPLAINWhich evidence supports your idea?
Check understanding
Which statement best explains inner worlds and outer giants?
Choose the explanation that matches the evidence—not just the most familiar words.
Three things to remember
✓The inner planets are small rocky worlds; the outer planets are much larger gas and ice giants.
✓The warmer inner disk favored rock and metal, while colder outer regions allowed more ices and massive atmospheres.
✓Evidence matters: density, spectra, gravity and spacecraft data reveal two broad planetary families.
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