Question Answer
Oceanic crust the uppermost layer of the oceanic portion of a tectonic plate.
Continental crust the layer of igneous, sedimentary, and metamorphic rocks that forms the continents and the areas of shallow seabed close to their shores, known as continental shelves.
Lithosphere outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties.
Asthenosphere is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth.
Mesosphere is the layer of the Earth's atmosphere
Outer core
Inner core
Alfred Wegner The person who made a theory about the continental drift
Pangea The theory that Wegner made that all continents were put together
Continental drift
Mid ocean ridge
Sea flour spreading
a silicate rocky shell with an average thickness of 2,886 kilometers The mantle encloses the hot core rich in iron and nickel, which makes up about 15% of Earth's volume.
The outer core of the Earth is a fluid layer about 2,300 km thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle.
the Earth's innermost part. It is primarily a solid ball with a radius of about 1,220 kilometers, which is about 70% of the Moon's radius.
a theory that explained how continents shift position on Earth's surface.
an underwater mountain range, formed by plate tectonics.
a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
Convection currents a current in a fluid that results from convection.
Plate boundary There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries.
Convergant boundary a convergent boundary, also known as a destructive plate boundary, is a region of active deformation where two or more tectonic plates or fragments of the lithosphere near the end of their life cycle.
Divergent boundary is a linear feature that exists between two tectonic plates that are moving away from each other.
Transform boundary are places where plates slide sideways past each other.
Subduction the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Theory of plate tectonics the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
Volcano a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
Earthquake a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
Hotspot a small area or region with a relatively hot temperature in comparison to its surroundings.
Inside earth

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