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Foundations of Geology: Chapter 2, Section 1

Teacher: Mrs. S. Vandervort
Across
The boundary, or fracture zone, between stationary rocks and moving rocks.
Rocks that buckle upward during folding to form an archlike structure
The area in between, where the upper mantle merges into the lower mantle,
Seems to be liquid due to the immense heat at that depth. It probably consists of molten iron and nickel.
Top 250 miles of the mantle.
Some advocates of plate techtonics have taken the theory that some time in the past, all the continents were connected into one huge land mass.
Earthquake vibrations that travel through the earth.
The study of the earth.
The earth's outer layer made of solid rock.
Rocks that bend downward during the folding process to form a troughlike structure
Down
"sphere of stone," a region of the earth's crust and upper mantle.
Extends from about 650 miles to about 1800 miles beneath the surface.
Elevated land masses that are higher than hills
Thought to be solid iron or nickel, kept in the solid state by pressures of 52 million pounds per square inch.
These floats like rafts on the plastic rock of the upper mantle.
The middle layer of the earth.
Deposits of sand, mineral fragments, or organic materials usually left by wind or water.