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 _________