Astronomy › Section G · The solar system and Earth › Topic G.5
Earth's global view and crust
Earth is the one planet we can study from the inside out, and it is the yardstick for every other rocky world. Earthquake waves map its hidden layers, a magnetic field shields it, and slowly moving plates keep its surface young.
In this topic
- Earth as a planet
- Seeing inside with earthquakes
- The layers
- Worked example: how dense is the core?
- The magnetic field and magnetosphere
- Rocks of the crust
- Plate tectonics
- Where plates meet
- Worked example: the age of an ocean floor
- Volcanoes and hot spots
- Common mistakes to avoid
- Key takeaways
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