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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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Types of rocks

Science · Earth's Systems · language

Use vocabulary for Earth's geological processes and rock types — igneous, sedimentary, metamorphic, erosion, weathering, deposition, fossil, sediment, strata, permeable, impermeable — and apply these when explaining how rocks form and how landscapes change over time

What mastery looks like

  • Correctly classify igneous, sedimentary, and metamorphic rocks and explain in one sentence how each type forms
  • Use 'erosion', 'weathering', and 'deposition' correctly as three distinct stages in a sequence
  • Explain how fossils form using 'sediment' and 'sedimentary rock' correctly

Check your understanding

Could Types of rocks explain the difference between a rock being weathered and being eroded — those are actually two different things?

Prerequisites

None — this is a foundational concept.

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