Earth's Layers Work Together in One Perfect System  
Top: Movement of the plates causes volcanoes and earthquakes and forms mountains and continents. Bottom: Early in Earth's history, water vapor from volcanoes helped form our oceans. Under your feet, the Earth's different layers are moving and interacting all the time. All the layers work together in a system, and each one plays an important role.

Here's just one way they all work together:

  • Intense heat flowing out of the core and mantle makes the mantle flow in circles.
  • The motion of the mantle causes the plates to move.
  • The moving plates create volcanoes.
  • The volcanoes release gases into the atmosphere.
  • The atmosphere acts like a giant blanket, keeping the planet warm.

This makes life on Earth possible!