Earth's Layers

Asthenosphere

the region below the lithosphere, variously estimated as being from fifty to several hundred miles (eighty-five to several hundred kilometers) thick, in which the rock is less rigid than that above and below but rigid enough to transmit transverse seismic waves.

asthenosphere

Earth has five layers based on physical properties: the inner core, the outer core, the mesosphere, the asthenosphere, and the lithosphere. Which of these layers do the tectonic plates move on top of?

the rigid, upper part

Earth's physical layers correspond to Earth's compositional layers. Which part of the mantle is also part of the lithosphere?

The physical layers of the inner core and outer core form a single compositional layer.

Evelyn is making a model of Earth to show how the physical layers correspond to the compositional layers. Which of the following claims should Evelyn show in her model?

convection current

Hot material rises to the top, cools and falls back to the bottom creating a circular currents

inner core

Innermost layer

iron and nickel

The innermost physical layers of Earth are the inner core and outer core. Which two metals does the evidence say the inner and outer core are mostly made of?

outer core

The layer that is between the mantle and the core

Lithosphere

The outer part of the earth, consisting of the crust and upper mantle, about 100 kilometers (62 miles) thick

mantle convection

The transfer of heat by the movement of a fluid

lithosphere

What is the layer that includes the crust and the upper part of the mantle?

mantle

What is the thickest layer?

crust

What layer is the outermost layer of the Earth?

crust

Which compositional layer of Earth can you claim is the thinnest?

Outer Core

a fluid layer about 2,300 km (1,400 mi)[1] thick and composed of iron and nickel that lies above Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath the Earth's surface

lower mantle

contains 49.2 % of the Earth's mass and is about 50% of the total mass of the planet. The lower mantle contains 72.9% of the mantle-crust mass and is composed of silicon, magnesium, oxygen, iron, calcium, and aluminum. The lower mantle extends from 670 to 2900km. the part of the mantle closest to the outer core

Inner Core

located at the center of the Earth and is composed of nickel and iron