The Andes Mountains in South America are volcanic because...

subduction at a convergent boundary

Volcanoes are found at _______

hot spots, convergent boundaries, and divergent boundaries

Where one oceanic plate slides beneath another plate, at a subduction zone, what can occur?

mountains, trenches, volcanoes, earthquakes

At a divergent boundary, as the material moves away from the ridge it becomes...

older, colder, lower in elevation, more dense

At a divergent boundary, where is the oldest rock found?

far away from the mid-ocean ridge

What facts did Alfred Wegener use to support his theory of Continental Drift?

continents fit together like a puzzle, plant/animal/and rocks of similar type found on different continents

At deep ocean trenches what geologic events occur?

earthquakes, volcanoes, mountains

Why is the mantle made of molten magma?

heat from the earth's core make it fluid by convection

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Plate Tectonics

Period 3- Open Notes Test Review

Question	Answer
What was the name of Alfred Wegener's hypothesis?	Continental Drift
What comes out of a divergent boundary that causes sea floor spreading?	magma
Which was NOT a clue Wegener used to support his hypothesis of Continental Drift?	convection currents
Alfred Wegener believed all the continents were once joined in a super continent called __	PANGEA
In sea floor spreading two plates move...	away from one another
Plates sliding past one another = ________ boundary	transform
Plates that collide and press into one another form ______ boundaries.	convergent
Plates that pull away from one another = _____ boundaries	divergent
Deep ocean trenches are formed at _________	subduction zones
The Hawaiian islands are a good example of ______	hot spots
Which layer of the earth is most dense?	inner core
The Andes Mountains in South America are volcanic because...	subduction at a convergent boundary
Which is an example of an island arc formed by subducting plate boundary?	Japan
Where do deep ocean trenches form?	convergent boundaries
Volcanoes are found at _______	hot spots, convergent boundaries, and divergent boundaries
Seafloor spreading occurs because of convection in which layer?	mantle
Where one oceanic plate slides beneath another plate, at a subduction zone, what can occur?	mountains, trenches, volcanoes, earthquakes
At a divergent boundary, as the material moves away from the ridge it becomes...	older, colder, lower in elevation, more dense
At a divergent boundary, where is the youngest rock found?	at the mid-ocean ridge
At a divergent boundary, where is the oldest rock found?	far away from the mid-ocean ridge
What type of boundary creates new sea floor?	divergent
At a divergent boundary, which direction do the plates move?	away from each other
What facts did Alfred Wegener use to support his theory of Continental Drift?	continents fit together like a puzzle, plant/animal/and rocks of similar type found on different continents
At a transform boundary, what geologic event occurs?	earthquuakes
At deep ocean trenches what geologic events occur?	earthquakes, volcanoes, mountains
At this convergent boundary why is one plate subducting under the other?	it is more dense
Why is the mantle made of molten magma?	heat from the earth's core make it fluid by convection
At what type of boundary do the plates collide?	convdrgent
At what type of boundary do the plates move away from each other?	divergent
At what type of boundary do the plates slide past each other?	transform

Created by: Mr.McKeehan

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