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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Earth's Layers

Science · Volcanoes & Earthquakes · conceptual

Know that Earth has layers — a thin outer crust, a thick hot mantle, and a core at the centre — and that the inside of the Earth is extremely hot

What mastery looks like

  • Name Earth's three main layers: crust, mantle, and core
  • Explain that the crust is thin compared to the other layers
  • State that Earth's interior is extremely hot — hot enough to melt rock

Check your understanding

If Earth's Layers cracks open a hard-boiled egg, can they compare it to Earth and name the three layers — crust on the outside, mantle in the middle, and core at the centre?