Geologic Time Scale

Have you ever wondered how old our planet is? Use this engaging worksheet to introduce students to the geologic time scale and the pieces of evidence scientists use to determine Earth’s history! Designed for middle school learners, this earth science worksheet features a reading passage in which students are introduced to new vocabulary words, including geologist, relative age, absolute age, geologic time scale, law of superposition, extrusion, intrusion, fault, index fossil, radioactive dating, and half-life. Then, using what they've learned, students will be asked to analyze diagrams of rock layers and answer critical thinking questions about Earth’s geologic history.