Abeka 8th Grade Science Quiz 4

The structure formed when a layer of rock breaks and moves is a _______.

The most abundant element in the earth's crust is ________.

A type of fold in which the rock layers buckle upward into an arch-like structure is a __________.

The deposits of sand, mineral fragments, and organic material that cover most of Earth's surface are ________________.

The idea that the earth's crust consists of huge plates that slowly drift over the earth's surface is the theory of plate ___________.

The central part of the earth is called the _______.

The plastic rock in the lower portion of the upper mantle is called the ______________.

The boundary between the crust and the mantle is called the ________.

The _________ zone is the area between the upper mantle and the lower mantle.

The middle layer of the earth is called the __________.