Mastin 2018								Name:__________________  	

Plate Tectonics Part 2 and Rock Cycle Test Review

Plate Tectonics - Match each letter that appears on the diagram with the appropriate feature below. Then answer the questions.

1.	The type of boundary marked by the letter Y is a(n) ___________________________________.

2.	The type of boundary marked by the letter X is a(n) _________________________.

3.	The arrows in the mantle indicate the direction of flow of __________________    ________________ beneath the plates.  (two word answer)

Matching
Match each letter (A, B, C, D) that appears on the diagram with the appropriate feature below and print that letter on the blank.

_____ 4.  	Highly-folded mountains	

____	5.	Subduction zone

____	6.	Rift valley

____	7.	Volcanoes

Match each process of seafloor spreading with its description below and print that letter on the blank.

____	13.	Hot magma fills the gap that forms at the ridge.

____	14.	Hot magma is forced toward crust along an ocean ridge.

____	15.	The magma hardens, to form a small amount of ocean floor.

Match each feature with the appropriate map location and print that letter on the blank.

A.

C.

B.

_____ 16.  Mid-Atlantic Ridge			
_____ 17.  Great Rift Valley	

_____ 18.  Pacific Ring of Fire 

Choose the best match and print that letter on the blank.

a.	deep-sea trench	d.	plate tectonics theory	
b.	transform	e.	convection currents	
c.	rift valley	

____	19.	The mechanisms thought to be associated with plate movements

____	20.	Type of boundary characterized by long faults and shallow earthquakes

____	21.	A narrow, elongated depression in the seafloor; convergence

____	22.	States that Earth’s crust and upper mantle are broken into plates that move

____	23.	A narrow, long depression in continental crust; divergence

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question and print that letter on the blank.

____	27.	The youngest part of the ocean floor is found ____.
a.	along deep sea trenches	
b.	where ocean sediments are thickest	
c.	where Earth’s magnetic field changes polarity	
d.	near ocean ridges	

____	28.	The existence of coal beds in Antarctica indicates that the continent once had ____.
a.	a temperate, rainy climate	c.	a cold, dry climate	
b.	been part of Africa	d.	been farther from the equator	

____	29.	At an oceanic-oceanic convergent boundary, ____.
a.	new crust is created	c.	old crust is recycled by subduction	
b.	old crust is deformed or fractured	d.	plates side past one another	

____	30.	Glossopteris is a fossil _____ that helped support Wegener’s hypothesis of continental drift.
a.	plant	c.	bird	
b.	mammal	d.	reptile	
____	31.	The downward part of a convection current causes a sinking force that ____.
a.	pulls tectonic plates toward one another	
b.	creates a divergent boundary	
c.	lifts and splits the lithosphere	
d.	moves plates apart from one another	

____	32.	Isochron maps of the seafloor indicate that ocean crust is ____.
a.	oldest near ocean ridges	c.	youngest at deep-sea trenches	
b.	youngest near ocean ridges	d.	thinnest in subduction zones	

____	33.	Continental drift was not widely accepted when it was first proposed because ____.
a.	mantle convection currents weren’t in motion at that time	
b.	continental landmasses were too big to move slowly over Earth’s surface	
c.	magnetic and sonar data proved that Wegener’s hypothesis was incorrect	
d.	Wegener couldn’t explain why or how the continents moved	

____	34.	Many early mapmakers thought Earth’s continents had moved based on ____.
a.	plate boundary locations	c.	climatic data	
b.	matching coastlines	d.	fossil evidence	

____	35.	Crust near ocean ridges is ____ compared to crust near deep-sea trenches,
a.	magnetically reversed	c.	the same age	
b.	older	d.	younger	

___	36.	The driving forces of tectonic plates are related to convection currents in Earth’s ____.
a.	crust	c.	mantle	
b.	inner core	d.	outer core	

____	37.	The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is ____.
a.	younger than on the other side	
b.	at right angles to the ocean ridge	
c.	much different from the magnetic pattern found in rocks on land	
d.	a mirror image of that of the other side	

____	38.	Features found at divergent boundaries include ____.
a.	deep-sea trenches	c.	crumpled mountains	
b.	ocean ridges	d.	island arc volcanoes	

____	39.	Continental-continental plate collisions produce ____.
a.	very tall mountain ranges	c.	deep-sea trenches	
b.	rift valleys	d.	island arcs 	

____	40.	Crust is neither destroyed nor formed along which of the following boundaries?
a.	convergent	c.	magnetic	
b.	divergent	d.	transform	

_____	41.	Subduction results in the formation of ____.
a.	a rift valley	c.	a deep-sea trench	
b.	a magnetic reversal	d.	new continental crust

	

Using the figure above answer the following questions. *This figure will be on the test.