Plate Tectonics and the Earth's crust

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What is the name of the type of fault created at a transform plate boundary?

A strike-slip fault

What is a trench

A trench is a deep VALLEY

what happens when two continental plates diverge.

A valley-like rift appears

What happens if the crust along a boundary becomes very thin?

A piece of the continent may break off

what causes faults?

2 plates sliding against each other

what is a cool way to remember the difference between syncline and anticline?

AN in anticline is like an ANgel and SYN in SYNcline is like sin, and sinners are down and angels are up

where convergent plate boundaries are found

Eurasian plate and Indian plate in the himalayas

what happens when two continental plates collide

Continental plates buckle and crumple

Pangaea

Greek for all the earth

What is a fault?

IT IS A CRACK IN THE EARTH.

Island arcs- what forms them

Island arcs are formed when an older plate is forced under a younger one

What does the magma formed at the subduction zone do

It erupts in a volcano.

How are the plates named

Landmasses, oceans, or where they are on the earth

where transform plate boundaries are found

New zealand

What is the name of the most famous of these faults

San Andreas Fault

Continental plate collides with an oceanic plate.

The denser oceanic plate is pulled under the continental plate and creates a trench.

Island arcs

are often found in the Marianas and the Aleutian Islands off of Alaska.

what happens at divergent boundaries found in the middle of the ocean.

The oceanic plates split apart and magma oozes out like pus and then hardens

when two oceanic plates collide.

The older plate is forced under the younger one

Describe what is happening at the San Andreas Fault

The pacific plate and the north american plate grind past each other

Why do transform boundaries and the resulting faults produce earthquakes?

The plates catch on each other and when pressure builds somethings snaps or slips and the plates jerk, creating earthquakes

where divergent plates boundaries are found

The red sea

Island arcs what are they

They are small volcanic islands

subduction zone

When a plate is forced under another, or subducted

what forms a trench

a denser oceanic plate is pulled under a continental plate

Who was Alfred Wegener

a german scientist that found out about continental drift.

what is a syncline

a syncline is when a plate is crumpled and bends downward

what is an antycline

an antycline is when a plate is crumpled and bends upward

The border between two tectonic plates is called

boundary

where more transform plate boundaries are found

california

modern theory of Plate Tectonics

cause earthquakes and volcanic activity.

Plates that push together

convergent

red lines

convergent

Plates moving apart

divergent

white lines -

divergent

What event is often associated with subduction zones and the collision of plates

earthquakes

another thing plate tectonics explain

earthquakes

Give an example of where this has happened.

himalayas

what is created at divergent boundaries found in the middle of the ocean.

it creates a mid-atlantic ridge

what happens to the newly broken off piece of land

it may become a new tectonic plate

what can form in the rift?

lakes

more convergent plate boundaries

nazca plate and the south american plate along the coast of south america.

outer core

only liquid layer, melted nickel and iron

where more divergent plates boundaries are found

pacific and atlantic plates

inner core

really hot sphere of iron and nickel

vibrations from earthquakes

seismic waves

Give an american example of where this has happened.

the blue ridge

Crust-

the outside layer, is the thinnest, made of mostly rock

Lithosphere

the rigid outer part of the earth, consisting of the crust and upper mantle.

tectonic plates

the two sub-layers of the earth's crust that move, float, and sometimes fracture and whose interaction causes continental drift, earthquakes, volcanoes, mountains, and oceanic trenches.

Continental and oceanic

the two types of crust.

Asthenosphere

the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.

what is created when two continental plates collide

they create mountains and mountain ranges.

continental crust

thicker

Mantle-

thickest layer, consists of molten rock

oceanic crust

thinner

Sliding plates

transform

purple lines -

transform

what do plate tectonics explain

volcanos

what may appear on the sides of rifts?

volcanos


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