Which layer in the structure of the planet is the biggest and basically igneous rock-like material rich in magnesium and iron?

___ is molten rock that is silica-rich, thick, light-colored, and slow moving.

___ is molten rock that is silica-poor, thin, dark-colored, and fast moving.

This layer of the Earth is comprised of iron and nickel components and is solid.

Which layer in the structure of the planet is the thin outer layer that is comprised of oceanic & continental material?

Active volcanoes are most likely to form at _____________.

When plates move past one another, ____________ occur.

___ are formed by a convergent boundary.

The San Andreas fault if formed by which type of boundary?

A type of evidence NOT used by Alfred Wegener to support his theory of continental drift was ___.

Both collision and subduction boundaries are types of ___.

The Himalayan Mountains are formed by this type of plate boundary:

____ convection currents within the asthenosphere drive the lithospheric plate’s apart, while ____ convection currents pull the plates together.

The mid-Atlantic Ridge and the East Pacific Rise are locations where two lithospheric plates are moving ___.

A collision boundary results when two ___ plates ____ and weld together.

The San Andreas Fault is the result of the Pacific Plate sliding past the _______ plate.