Plate Tectonics

divergent

At a __________ plate boundary new crust is created as two or more plates pull away from each other.

created, destroyed

At a transform boundary (fault) land is neither __________ or __________, only moved.

transform plate boundaries

Areas where two plates grind past each other resulting in faults such as the San Andreas Fault. Earthquakes often occur at fault lines.

oceanic

On our planet oceanic plates collide with other __________ plates.

lithosphere

The crust and upper most part of the mantle?

subduction zone

A __________ __________ is a convergent boundary where an oceanic plate is pushed beneath a continental plate forming a trench. The oceanic crust melts resulting in the formation of volcanoes.

convergent

A __________ boundary occurs when two tectonic plates collide into each other.

transform

A __________ boundary occurs when two tectonic plates slide past each other.

oceanic, continental

A collision between an oceanic plate and a continental plate pushes the __________ plate into and under the __________ plate.

rift valley

A large valley shaped area of the Earth in which plates of the Earth's crust are moving away from each other, forming a system of cracks and faults.

The Atlantic Ocean did not exist in earlier times.

Alfred Wegener noted that fossils from a particular type of reptile were found on both sides of the Atlantic Ocean. Which of the following would be the BEST explanation of how this occurred? They swam across the ocean. The Atlantic Ocean did not exist in earlier times. They walked across a giant land bridge that has weathered away. They walked across an ice bridge located near the equator.

divergent plate boundaries

Areas where plates move away from each other, forming either mid oceanic ridges or rift valleys.

convergent plate boundaries

Areas where plates move toward each other and collide, causing uplift.

heat generated by the Earth's core

Causes convection currents in the mantle?

mountain

Convergent boundaries can form underwater __________ ranges.

earthquakes

Divergent boundaries can cause shallow __________.

seafloor

Divergent boundaries can create new __________.

wider

Divergent boundaries cause oceans to grow __________.

core

Generates Earth's heat?

What type of land forms are formed when two oceanic crusts collide?

Island Arcs

convection currents

Large __________ __________ in the asthenosphere transfer heat to the surface, where plumes of less dense magma break apart the plates at the spreading centers, creating divergent plate boundaries.

asthensophere

Large convection currents in the ____________________ transfer heat to the surface, where plumes of less dense magma break apart the plates at the spreading centers, creating divergent plate boundaries.

inner core, outer core, mesosphere, asthenosphere, lithosphere

List the layers of the Earth in order from inside to outside.

asthenosphere

Look at the picture "Plate Tectonic Features". What is number eight?

oceanic crust

Look at the picture "Plate Tectonic Features". What is number five?

convergent

Look at the picture "Plate Tectonic Features". What is number four?

subduction zone

Look at the picture "Plate Tectonic Features". What is number nine?

magma

Look at the picture "Plate Tectonic Features". What is number seven?

lithosphere

Look at the picture "Plate Tectonic Features". What is number six?

oceanic

Look at the picture "Plate Tectonic Features". What is number ten?

divergent

Look at the picture "Plate Tectonic Features". What is number three?

transform

Look at the picture "Plate Tectonic Features". What is number two?

lava

Magma is called __________ once it spills out onto the Earth's surface.

Sea-floor spreading

Molten rock from inside Earth rises through the cracks in the ridges, cools, and forms new oceanic crust. In this way the sea floor slowly moves apart.

magma

Molten rock inside the Earth?

convection currents

Movements within Earth's mantle that causes tectonic plates to collide, separate, or slide past each other are called __________ __________.

Theory of Plate Tectonics

Pieces of Earth's lithosphere are in slow, constant motion, driven by convection currents in the mantle.

asthenosphere

Scientists believe that convection currents in the __________ is responsible for the movement of the plates that form the Earth's crust. asthenosphere lithosphere inner core outer core

where two plates are moving away from each other in opposite directions

The MOST recently formed crust of the Earth would be found... where plates moving sideways passed each other where one plate is going under another plate where two plates are pushing directly toward each other where two plates are moving away from each other in opposite directions

convergent plate boundary

The Ring of Fire has formed a volcanic island chain in the Pacific Ocean. What has caused this to happen? convergent plate boundary divergent plate boundary transform plate boundary mantle hot spot

transform

The San Andreas Fault in California is a __________ plate boundary.

Great Rift Valley

The __________ __________ __________ is an example of a rift where land between two continents are being pulled apart.

Himalayan

The __________ mountain range was formed from the collision of the Indian plate colliding into the Eurasian plate.

Mid-Atlantic Ridge

The __________-__________ __________ is an example of a divergent boundary.

mesosphere

The lower mantle?

asthenosphere

The upper mantle?

eight

There are __________ major tectonic plates. Hint: count the big plates!

earthquakes

Transform boundaries (faults) cause __________.

What type of land forms are created when an oceanic plate subducts under a continental plate?

Volcanic mountain ranges

convection

What do you call the process of hot rock rising, cooling, and then sinking?

frostbite

What do you get when you cross a snowman with a vampire?

tectonic plates

What does this picture show?

subduction

When a collision between an oceanic plate and a continental plate pushes the oceanic plate into and under the continental plate __________ takes place.

rift

When a divergent boundary occurs on land a __________, or separation, will arise and over time, that mass of land will break between them.

volcano

When oceanic crust melts it can result in the formation of a __________.

deep-ocean trench

When oceanic plates collide with continental plates a __________ will form between the two plates.

subduct

When oceanic plates collide, one of those plates will __________ (go beneath the other).

denser

When plates collide the plate that is __________ will subduct (go beneath the other).

fault

When tectonic plates slide past each other a __________ is formed.

mountains

When two continental plates collide large __________ will usually form.

I

Where would the ocean floor be the oldest? I, II, III, or IV

IV

Where would the youngest ocean floor be found? I, II, III, or IV

D

Which area on the terrain above would show an area with a divergent plate boundary? A, B, C, or D

A

Which area on the terrain would show an area with a convergent plate boundary? A, B, C, or D

mountain

Which of these landforms is MOST likely to be found at a convergent boundary? fault line mid-oceanic ridge mountain rift valley

mid-ocean ridge

Which of these landforms would MOST likely be found at a divergent boundary? fault line mid-ocean ridge volcanic island mountain

Alfred Wegener

Which scientist is credited for first proposing the theory of Continental Drift? Albert Einstein Alfred Wegener Abraham Ortelius Harry Hess

South America and Africa

Which two continents did Alfred Wegener think looked like they fit together like puzzle pieces? North America and South America Europe and Africa North America and Europe South America and Africa

oceanic

Which type of crust is denser, oceanic or continental?

Oceans

__________ can be created or grow wider where plates diverge or pull apart.