Earth's outer layer; the coolest and least dense layer of Earth. See also core, and mantle.

The layer of Earth beneath the crust. It is about 2,900 km (1,800 mi) thick, and makes up about 83 percent of Earth's interior. See also core, and crust.

A layer of molten iron and nickel that surrounds the inner core of Earth.

A dense sphere of solid iron and nickel at the center of Earth.

The distance north or south of the equator measured in degrees. See also longitude.

The distance east or west of the prime meridian in Greenwich, England; measured in degrees. See also latitude.

A mountain-like landform that develops when tectonic plates move apart or separate and a new ocean lithosphere forms.

A process by which new seafloor is formed from the magma rising from Earth's diverging oceanic plates.

A plate boundary where two plates move away from each other.

A plate boundary where two plates move toward each other.

A plate boundary where two plates move past each other in opposite directions.

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plate movement

Term	Definition
crust	Earth's outer layer; the coolest and least dense layer of Earth. See also core, and mantle.
mantle	The layer of Earth beneath the crust. It is about 2,900 km (1,800 mi) thick, and makes up about 83 percent of Earth's interior. See also core, and crust.
outer core	A layer of molten iron and nickel that surrounds the inner core of Earth.
inner core	A dense sphere of solid iron and nickel at the center of Earth.
latitude	The distance north or south of the equator measured in degrees. See also longitude.
longitude	The distance east or west of the prime meridian in Greenwich, England; measured in degrees. See also latitude.
oceanic ridge	A mountain-like landform that develops when tectonic plates move apart or separate and a new ocean lithosphere forms.
sea-floor spreading	A process by which new seafloor is formed from the magma rising from Earth's diverging oceanic plates.
divergent boundary	A plate boundary where two plates move away from each other.
convergent boundary	A plate boundary where two plates move toward each other.
transform boundary	A plate boundary where two plates move past each other in opposite directions.

Created by: user-2030146

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