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Rock Force And Layer Of Earth – Astronomy

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


type of stress that occurs when an object is squeezed together


type of stress where rock is pushed in opposite horizontal direction


type of boundary where crust is neither created nor destroyed


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


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

Pacific Plate

largest lithospheric plate


type of stress that pulls rocks apart

constructive forces

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


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


low lying land situated between hills or mountains


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


thickest layer of Earth

tal crust is made up of this rockcontinen


what do convection currents move?

tectonic plates

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


core two minerals located in the Earth’s

iron and nickel

the supercontinent


the two continents that best fit in Pangaea

South America and Africa

seafloor spreading

process that creates new oceanic crust


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


formed by the collapse of land


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

folding and faulting of rock forms tall _______


type of plate boundary that formed the Mid- Atlantic Ridge


type of plate boundary where crust is destroyed


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


type of plate boundary that only produces earthquake activity


type of plate boundary responsible for the formation of volcanoes


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


new crust is formed at this type of boundary


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


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


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


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


Ring of Fire

area of active volcanoes that surround the Pacific Plate


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



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


plates of the lithosphere float on the ________


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?


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