Big Idea 1: Earth scientists use repeatable observations and testable ideas to understand and explain our planet.
Big Idea 2: Earth is 4.6 billion years old.
Big Idea 3: Earth is a complex system of interacting rock, water, air, and life.
Big Idea 4: Earth is continuously changing.
Big Idea 5: Earth is the water planet.
Big Idea 6: Life evolves on a dynamic Earth and continuously modifies Earth.
Big Idea 7: Humans depend on Earth for resources.
Big Idea 8: Natural hazards pose risks to humans.
Big Idea 9: Humans significantly alter the Earth.
Big Ideas videos bring to life the “big ideas” of Earth science - the nine core concepts that everyone should know.