Rock Force And Layer Of Earth – Astronomy

Rock Force And Layer Of Earth – Astronomy

This discussion is about Rock Force And Layer Of Earth – Astronomy.


compression

type of stress that occurs when an object is squeezed together


shear

type of stress where rock is pushed in opposite horizontal direction


transform

type of boundary where crust is neither created nor destroyed


divergent

plate boundary between two tectonic plates that are pulling away from each other


crustal deformation

the change in shape or size of a rock due to folding or breaking


volcano

type of mountain formed when molten rock is forced to the Earth’s surface


Pacific Plate

largest lithospheric plate


tension

type of stress that pulls rocks apart


constructive forces

forces that build up existing landforms or creates new surface features of Earth


deposition

this process creates sand dunes, beaches, and deltas


destructive forces

forces that destroy landforms through weathering or erosion


chemical weathering

the changing of materials in a rock by a chemical process


convergent boundary

plate boundary where tectonic plates move toward each other and collide


valley

low lying land situated between hills or mountains


magma

molten rock deep within the Earth


Juan de Fuca and North American

tectonic plates responsible for formation of the Cascade Mountains


outer core

layer of Earth that is liquid


mantle

thickest layer of Earth


tal crust is made up of this rockcontinen

granite


what do convection currents move?

tectonic plates


the crust and mantle together make up this zone of rigid, brittle rock

lithosphere


core two minerals located in the Earth’s

iron and nickel


the supercontinent

Pangaea


the two continents that best fit in Pangaea

South America and Africa


seafloor spreading

process that creates new oceanic crust


asthenosphere

the plastic like layer of Earth on which the tectonic plates move


caldera

formed by the collapse of land


subduction

one plate is forced down into the mantle, where it begins to melt


folding and faulting of rock forms tall _______

mountains


type of plate boundary that formed the Mid- Atlantic Ridge

divergent


type of plate boundary where crust is destroyed

convergent


mountain range that is still growing today due to continental plate collision?

Himalayas


type of plate boundary that only produces earthquake activity

transform


type of plate boundary responsible for the formation of volcanoes

convergent


continental drift

the hypothesis that continents were once connected and have slowly moved to current location over a period of time


this boundary usually results in subduction

convergent


new crust is formed at this type of boundary

divergent


most famous transform boundary (located in US)

San Andreas fault


crustal deformation

this constructive force causes the movement of tectonic plates squeezing or bending the surface of Earth


Alfred Wegener

scientist who determined evidence for continental drift


weathering

a slow, destructive force that wears down or breaks rocks into smaller pieces called sediments


earthquake

vibrations on the surface caused by sudden movement as built up energy along plate boundary or fault is released


two elements found in the crust

oxygen and silicon


convection currents

mechanism for movement of tectonic plates


type of stress associated with a convergent boundary

compression


the Red Sea formed as a result of this type of plate boundary

divergent


Ring of Fire

area of active volcanoes that surround the Pacific Plate


plateau

an elevated area of land with


 a flat delta

a flat plain at the mouth of a river


center of rice production and cotton growth in Arkansas

Delta


stalactite

structure hanging like an icicle from the roof of a cave


highest point in Arkansas

Mount Magazine


region of Arkansas formed by constructive forces squeezing rocks together

Ouachita Mountains


the region of Arkansas in which you live

Arkansas River Valley


region of Arkansas which was carved out by the Mississippi River and the Ohio River

Crowley’s Ridge


Arkansas region famous for the only public diamond mine

West Gulf Coastal Plains


Arkansas region known for cave systems formed by dissolved limestone

Ozark Mountains


plate boundaries

locations where two tectonic plates interact


tectonic plates slide past one another

transform boundary


tectonic plates move away from each other

divergent boundary


tectonic plates move towards each other and collide

convergent boundary


continental crust

ocean crust


mid-ocean ridges form when magma moved up into the spread region and cools

 (sea-floor spreading)


San Andreas Fault is an example of _______

transform boundary


Mid-Atlantic Ridge, Red Sea, and the Great Rift Valley are

divergent boundary


Cascade Mountains, Japan, Himalayan Mtns., and the Appalachian Mtns. are all examples of ______

convergent boundary


most of the knowledge about the Earth comes from

earthquakes


plates of the lithosphere float on the ________

asthenosphere


continental crust.

 forms continents and is a thin layer


oceanic crust..

is the thicker layer


are most plate boundaries found in the ocean or on land?

Ocean


name the layers of Earth in order

inner core, outer core, lower mantle, middle mantle, upper mantle, crust


two constructive forces

deposition and crustal deformation


four destructive forces

weathering, erosion, mechanical weathering and chemical weathering


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