Science

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pangea meaning in greek

all the land

part of mantle that can bend like plastic

asthenosphere

scientists believe that lithospheric plates move because of

convection currents

boundary where 2 plates collide

convergent

the andes mountains were generated at a _ boundary

convergent (con-con)

the himilayan mountains were formed because of a

convergent boundary

the place where two plates collide if called a

convergent boundary

deepest part of ocean

deep ocean trenches

a change in a rocks shape or volume is called _, which is caused by stress as the plates push, pull, twist, and bend the lithosphere

deformation

a measure of how much mass there is in a volume of a substance

density

a boundary where 2 plates move away from each other

divergent

the place where 2 plates move apart is called a

divergent boundary

volcanoes are most likely to occur along a

divergent boundary

the mid ocean ridge occurs along a

divergent boundary where crust is subducted

where the lithosphere breaks a fault forms. when the rock along the fault breaks and slides what occurs

earthquake

what produces seismic waves

earthquakes

the older the sea floor, the _ it will be from the new sea floor

farther away

pressure is more in the

inner core

the thickness of ocean sediments that are close to a mid ocean ridge is _ the thickness of ocean sediments that are far from mid ocean ridges

less than

oceanic crust cools and becomes more dense as it moves away from

mid ocean ridge

what 2 topographic features of the ocean floor were discovered only with the use of sonar

mid ocean ridges and deep sea trenches

folding and faulting driven by plate movement result in _ building

mountain

when 2 continental plates collide along a convergent boundary what type of landform is created as the plates crash head on and squeeze together

mountains

how do plates move along a divergent boundary

move apart from each other

core is composed of

nickel and iron

volcanic island arcs are associated with

ocean-ocean convergent boundaries

the 2 types of crust are

oceanic and continental

subduction is when

one plate slides under another

began to break apart 225 million yrs ago

pangea

what theory explains the formation, movement, and subduction of the earths plates

plate techtonics

difference b/t inner earth and crust

pressure and temp decreases

when 2 continental plates pull apart a _ forms

rift valley

what causes sea floor to spread

rising molten magma

harry hess created the theory of

sea floor spreading

the process that continually adds new crust is

sea floor spreading

how can we study the core of the earth

seismic waves

what are the 3 types of faults

strike slip, normal, reverse

_ occurs when the land surface sinks as a result of human activities

subsidense

difference of oceanic crust than con. crust

thinner, denser

boundary where 2 plates slip past each other

transform

where 2 plates rub past each other in opposite directions is a

transform boundary

where 2 plates slip past each other and move in opposite directions is called what type of boundary

transformed

when one ocean plate collides with another the subduction forms a

trench

_ theorized that there was a supercontinent named pangea

wegener

a map of global earthquakes and volcanoes tells you

where the plate boundaries are

rocks close to mid ocean ridges are _ rocks far from mid ocean ridges

younger than


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