Plate Boundaries (1)

Question 1

a long, underwater rift valley winding through the ocean floor

Answer 1

mid-ocean ridge

Question 2

Divergent boundaries occur on the seafloor resulting in _________

Answer 2

seafloor spreading

Question 3

a divergent boundary between the South

American and African plates

Answer 3

Mid-Atlantic Ridge

Question 4

The longest chain of mountains is located ___________

Answer 4

underwater

Question 5

a large portion of the ridge
exposed above sea level can be found in ____________ – one of the very few
places where one can stand on the ridge between two diverging tectonic
plates on dry land

Answer 5

Iceland

Question 6

Another example of diverging plates, which will result in the formation
of a new ocean can be found in ________

Answer 6

East Africa

Question 7

New crust is usually formed at a ___________

Answer 7

mid-oceanic ridge

Question 8

A type of boundary that is characterized by
plates grinding or sliding past one another horizontally along a long,
vertical fault.

Answer 8

transform fault boundary

Question 9

____________ are made of hot
rocks that originate way below the asthenosphere,
deep within Earth

Answer 9

mantle plumes

Question 10

a concentration of heat in the mantle
producing magma, which extrudes onto
the surface of Earth

Answer 10

hot spot

Question 11

An example of a hot mantle plume is __________

Answer 11

Hawaii

Question 12

the hypothesis which suggested that new
oceanic crust is formed at the crests of
mid-oceanic ridges, where divergence
occurs

Answer 12

seafloor spreading

Question 13

process by which an oceanic plate sinks
into the mantle along a convergent
boundary

Answer 13

subduction

Question 14

where tectonic plates interact

Answer 14

plate boundary

Question 15

the hypothesis which suggested that new
oceanic crust is formed at the crests of
mid-oceanic ridges, where divergence
occurs

Answer 15

seafloor spreading

Question 16

a chain of volcanic islands found near
a trench where active subduction of
one oceanic plate beneath another is
occurring

Answer 16

island arc

Question 17

mountains formed associated with
the subduction of oceanic lithosphere
beneath a continent

Answer 17

volcanic arc

Question 18

where neighboring tectonic plates move

toward each other

Answer 18

convergent boundary

Question 19

where neighboring tectonic plates move

away from each other

Answer 19

divergent boundary

Question 20

a theory that proposes that the outer surface of Earth is composed of individual
plates interact in various ways, and thereby produce earthquakes,
volcanoes, mountains, and the crust itself.

Answer 20

plate tectonics theory

Question 21

__________ boundaries produce geologic features depending on the materials on which the
converging plates are made of

Answer 21

convergent boundaries

Question 22

__________ and _____________ account for oceanic

trench, volcanic and seismic activity, and mountain along the coast

Answer 22

Converging continental and oceanic plates

Question 23

__________________ account for oceanic trench, seismic activity, and volcanic arc above the subducted plate

Answer 23

Converging oceanic

plates

Question 24

_____________ account for thick and elevated plateaus and mountain ranges

Answer 24

Converging continental plates

Question 25

TRUE/FALSE:

Most of the world’s volcanoes form along or near convergent and “transform-fault” boundaries.

Answer 25

FALSE; divergent

Question 26

TRUE/FALSE:
According to the Plate Tectonics theory, seafloor spreading takes place at a
“convergent” boundary.

Answer 26

FALSE; divergent

Question 27

TRU/FALSE:
An oceanic trench, seismic activity, and volcanic mountains along the edge of
a continent are characteristics of “oceanic-oceanic” plate convergence

Answer 27

oceanic continental

Question 28

TRUE/FALSE:
The formation of the Philippine archipelago is characterized by the processes
that occur due to continental to continental convergence.

Answer 28

oceanic-oceanic plate convergence

Question 29

TRUE/FALSE:

The Mid-Atlantic Ridge is a geologic feature produced by divergent boundaries.

Answer 29

TRUE