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Question Set: Change Over Time
NGSS Science and Engineering Practices
NGSS Crosscutting Concepts
NGSS Disciplinary Core Ideas
Table of Contents
  1. Has Earth always looked the way it does now? Explain your reasoning for your answer.
  2. The following questions are about the Cambrian explosion.
    1. Explain what is meant by the term “Cambrian explosion”.
    2. Describe what life on Earth was like before this event.
    3. What is the evolutionary significance of the Cambrian explosion?
  3. The following questions are about extinction.
    1. What does the term “extinction” mean to you?
    2. What is a mass extinction event? Define the term using your own words.
    3. What is the significance of the Permian-Triassic extinction?
    4. What catastrophe likely caused the extinction of the dinosaurs and other reptile groups?
  4. If the earth is 4.5 billion years old, calculate the percentage of time the planet has:
    1. had life on it
    2. had multicellular life
    3. had vertebrate animals (beginning during the Cambrian explosion)
    4. had dinosaurs
    5. had modern humans
  5. How are the history of life on Earth and the geology of life on Earth related?
Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.