Unit3 structure of the earth by Steffan Limon Barrera

Mesosphere

steffan_limon — 2016-10-27 15:15:39 UTC

1950, from meso- + second element in atmosphere. mesosphere in ScienceExpand. mesosphere. ... The region of the Earth's atmosphere lying above the stratosphere and below the thermosphere, from a height of about 50 km (31 mi) to about 80 km (50 mi) above the Earth's surface.

Crust

steffan_limon — 2016-11-01 14:54:26 UTC

The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The upper part of the mantle is composed mostly of peridotite, a rock denser than rocks common in the overlying crust.

Mantle

steffan_limon — 2016-11-01 15:08:38 UTC

Science Dictionary: Mantle. Mantle: is the part of the earthbetween the core and the the crust is the MANTLE. It is about 1,800 miles(2,900 km) thick and makes up nearly 80 percent of the Earth's total volume.The mantle is made up of magma and rock.

Core

steffan_limon — 2016-11-01 15:11:07 UTC

The outer core of the Earth is a liquid layer about 2,260 kilometers thick. It is made of iron and nickel. This is above the Earth's solid inner core and below the mantle. Its outer boundary is 2,890 km (1,800 mi) beneath the Earth'ssurface.

lithosphere

steffan_limon — 2016-11-01 15:14:33 UTC

"solid part of the earth's surface," 1881; see litho- "stone" + sphere. lithosphere in Science Expand. lithosphere. (lĭth'ə-sfîr') The outer part of the Earth, consisting of the crust and upper mantle.

asthenosphere

steffan_limon — 2016-11-01 15:18:33 UTC

The asthenosphere (from Greek ἀσθενής asthenḗs 'weak' + "sphere") is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth. It lies below the lithosphere, at depths between approximately 80 and 200 km (50 and 120 miles) below the surface.

Iner core

steffan_limon — 2016-11-11 16:27:45 UTC

THE INER CORE. THE OUTER CORE
THE CRUST
The crust is the part of the earth that we live on. It is made up of dirt, rock, and water.For more info go to-

http://en.wikipedia.org/wiki/Crust_(geology) THE MANTLEThe mantle is the second layer down (after the crust).

Outer core

steffan_limon — 2016-11-11 16:33:03 UTC

The outer core of the Earth is a fluid layer about 2,300 km (1,400 mi) thick and composed of mostly 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.

Plate Tetonics

steffan_limon — 2016-11-11 16:34:47 UTC

Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle. This strong outer layer is called the lithosphere.Mar 21, 2016

divergent boundary

steffan_limon — 2016-11-11 16:42:08 UTC

In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.

convergent boundary

steffan_limon — 2016-11-11 16:44:53 UTC

In plate tectonics, a convergent boundary, also known as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.

transform boundary

steffan_limon — 2016-11-11 16:49:25 UTC

A transform fault or transform boundary (also known as a conservative plate boundary, since these faults neither create nor destroy lithosphere), is a type of fault whose relative motion is predominantly horizontal, in either a sinistral (left lateral) or dextral (right lateral) direction.

Tension

steffan_limon — 2016-11-22 15:24:50 UTC

In geology, the term "tension" refers to a stress which stretches rocks in two opposite directions. The rocks become longer in a lateral direction and thinner in a vertical direction. One important result of tensile stress is jointing in rocks.

Fault

steffan_limon — 2016-11-30 13:04:16 UTC

A fault is a crack in the Earth's crust. Typically, faultsare associated with, or form, the boundaries between Earth's tectonic plates. In an active fault, the pieces of the Earth's crust along a fault move over time. The moving rocks can cause earthquakes.Jan 19, 2010

compression

steffan_limon — 2016-11-30 13:05:40 UTC

The definition of compression is the action or state of being squished down or made smaller or more pressed together. When a pile of material is squished together and made smaller and more dense, this is an example of compression. YourDictionary definition and usage example.

strata

steffan_limon — 2016-11-30 13:07:26 UTC

In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers. The "stratum" is the fundamental unit in a stratigraphic column and forms the basis of the study of stratigraphy.