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6th Grade Unit 3.1 Plate Tectonics

Horizontales
Giant slabs of lithospheric rock formed early in Earth's history; they fit together like pieces of a jigsaw puzzle, and include continental and oceanic crust.
Wegener's hypothesis that Earth's continents were joined in a single landmass.
Occurs when plates move apart. Most are found in the ocean.
The transfer of energy by the movement of materials.
The layer of Earth made up of the crust and the rigid rock of the upper mantle, averaging about 40 km thick and broken into tectonic plates.
Occurs when plates push together.
A thin layer of cool rock which surrounds the Earth like the shell of an egg.
A ball of hot, solid metals at the center of the Earth.
The characteristic weather conditions in an area over a long period of time.
Meaning "all lands," the supercontinent which joined all of the continents.
A trace or remain of a once-living thing from long ago.
When one plate sinks between another.
Verticales
A motion that transfers heat energy in a material.
A layer of liquid metals around the inner core.
Places where heated rock rises from the mantle in plumes, or thin columns.
Occurs when plates scrape past each other.
A layer of hotter, softer rock located in the upper mantle.
A switch in the direction of Earth's magnetic field so that the magnetic north pole becomes the magnetic south pole, and vice versa.
Huge, underwater mountain ranges.
A deep valley formed as tectonic plates move apart, such as along a mid-ocean ridge.
Earth's thickest layer, made up of hot rock.
The science that deals with the earth's physical structure and substance, its history, and the processes that act on it.