The Geologic Time Scale Vocabulary Words & Definitions | Earth & Space Science | Grades 9–12

The Geologic Time Scale Vocabulary Words & Definitions is a chapter vocabulary list with student-friendly definitions for high school Earth & Space Science (grades 9–12) on The Geologic Time Scale.

Pairs with: The Geologic Time Scale Slide Show Presentation; The Geologic Time Scale Guided Notes; The Geologic Time Scale Lesson Quiz.

What's inside: Vocabulary Terms & Definitions (editable .docx + PDF, about 206 words, 2 pages).

Standards: HS-ESS1-5 — Evaluate evidence of the past and current movements of continental and oceanic crust and the theory of plate tectonics to explain the ages of crustal rocks. HS-ESS2-7 — Construct an argument based on evidence about the simultaneous coevolution of Earth’s systems and life on Earth.

Resource type: Vocabulary Words & Definitions. Format: editable Microsoft Word file plus a ready-to-print PDF.

Classroom use: Distribute at the start of the chapter as a reference sheet, or use it for flashcards and word walls. Built for high school Earth & Space Science, grades 9–12.

Format note: These files are delivered in Microsoft Office formats (Word and/or PowerPoint). If you open a worksheet that includes tables in Apple Pages or another non-Microsoft app, table formatting may not display correctly. For best results, use Microsoft Word or PowerPoint (or upload the file to Google Docs). If you run into any formatting issues, contact us and we can send a PDF version.