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Why the Moon Changes Shape

  • Science
  • Class 4–8
  • 3D model
  • AR card
  • English

Eight positions show one Moon at different times. The bright half always faces the Sun; Earth sees different portions of it. This is a schematic overhead view.

The 3D viewer and AR open with a free Lably account.

Why the Moon Changes Shape

Also called

moon phases · Space

What to look for

  • The Moon reflects sunlight rather than making its own light.
  • Ordinary Moon phases are not caused by Earth’s shadow.
  • A full cycle from new moon to new moon takes about 29.5 days.

Try this

Find the new-moon and full-moon positions. Explain which illuminated half an observer on Earth can see.

Topics

  • moon phases
  • Space

About this model

A GLB file of about 609 KB, 20,456 triangles, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Lably-authored schematic teaching model. See /ar-library/credits.html.

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