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Geography: Earth's Structure

Across
a thick layer of rock that surrounds the earth’s core about 1, 800 miles (2896 km)
the feature formed when rock layer bend and buckle
any of the seven large landmasses in the oceans
The idea that continents slowly shift their positions due to movement of the tectonic plates on which the ride.
The center of the earth consisting of hot metal mainly iron mixed with nickel. It is very dense and solid in the inner core and molten in the outer core.
the rocky surface layer of the earth thinner on the oceans about 5 miles (8km) deep and thicker beneath the continent 22 miles (35 km) in some sections.
Down
The theory that the earth’s outer shell is composed of a number of a large, unanchored plates, or slabs of rocks, whose constant movement explains earthquakes and volcanic activity.
differences in elevation, or height of the landforms in any particular area.
a fracture or break in the earth causes by internal stresses.
molten rock that has flown out from within the earth on to the surface of the eart
a ring of volcanic mountains surrounding the rim of the Pacific Ocean
-The study of the earth's physical structure and history