Forces Within Earth

• Earth's solid, thinnest, outermost layer is the___

  crust
• beneath the crust is the ___, which is divided into the upper mantle, asthenosphere, and lower mantle

  mantle
• the upper ___, which is made up of solid bedrock, contain most of Earth's mass.

  mantle
• Alfred Wegener first proposed the continental drift theory, which states that there was once a super continent called ___. which separated and drifted apart over time.

  pangaea
• the _________ tells that the surface of the Earth is divided into several plates that "float" along the asthenosphere.

  plate tectonic theory
• A _________ plate boundary is formed when plates from opposite direction meet, causing one plate to be pushed beneath the other.

  convergent
• A _________ plate boundary is formed when two tectonic plates move away from each other.

  divergent
• the zone between two plates that slide horizontally past each other us called a _________

  transform