Topic 1.4 Tectonic Processes (O-O CONVERGENT)

CONVERGENT
Plate Boundaries

Tectonic Processes
Landforms

How do you know this diagram shows O-O Convergence?

Multiple Select

What landform CANNOT be found at O-O convergent plate boundary?

• Underwater volcanoes

• Volcanic islands

• Oceanic trenches

• Rift Valleys

Open Ended

Compare the depth of the Mariana Trench to the height of Mt. Everest. What does this tell you about the scale of oceanic trenches?

The Mariana Trench is the deepest oceanic trench on Earth formed by the subduction of tectonic plate

The
Mariana Trench
is the deepest oceanic trench on Earth

​It is formed by the subduction of the denser tectonic plate at
O-O and O-C convergent plate boundaries

Multiple Choice

Which of the following features is formed at the convergence of two oceanic plates?

• Mid-ocean ridge

• Oceanic trench

• Mountain range

• Rift valley

Multiple Select

Which of the following statements about subduction zones is/are correct?

• They are formed where two oceanic plates collide.

• They create deep oceanic trenches.

• They occur only on continental crust.

• They occur only on oceanic crust.

Multiple Choice

Which plate subducts beneath the other during oceanic-oceanic convergence, and what is the main landform created as a result?

• The denser plate subducts beneath the less dense plate, creating an oceanic trench.

• The less dense plate subducts beneath the denser plate, creating a mountain range.

• Both plates move apart, creating a mid-ocean ridge.

• The plates slide past each other, creating a fault line.

Labelling

Label Pacific Plate and Philippine Plate.

Drag labels to their correct position on the image

Philippine Plate

Pacific Plate

Multiple Choice

Which plate is denser?

• Pacific Plate

• Philippine Plate

Multiple Choice

What is the main difference between the Pacific Plate and the Philippine Plate in the context of oceanic-oceanic convergence?

• The Pacific Plate is denser and subducts beneath the less dense Philippine Plate.

• The Philippine Plate is denser and subducts beneath the Pacific Plate.

• Both plates are of equal density and do not subduct.

• The Pacific Plate moves away from the Philippine Plate.

Open Ended

Explain the formation of the Mariana Trench at the oceanic-oceanic convergent boundary.

​Underwater Volcanoes

Open Ended

How does oceanic-oceanic convergence lead to the formation of underwater volcanoes and volcanic islands?

Open Ended

How do the images of car crashes relate to the process of mountain formation?

Multiple Choice

Identify the Major Plate labeled B

• African Plate
• Antarctic Plate
• Pacific Plate
• Eurasian Plate 

Open Ended

Explain the process by which compressional forces lead to the formation of fold mountains.

Multiple Choice

Identify the type of plate boundary shown.

• O-O

  Convergent

• O-C

  Convergent

• C-C

  Convergent

• C-C

  Divergent

• O-O

  Divergent

Multiple Select

Select all the features that are associated with compressional forces at convergent boundaries.

• Folding of rocks

• Formation of mountain ranges

• Volcanic eruptions

• Buckle and fracture of rocks

Multiple Choice

An __________ is a deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle.

• oceanic trench

• rift valley

• sea-floor spreading

• mid-ocean ridge

Multiple Choice

When one plate goes UNDER another plate, it is called ___________.

• mountain

• mid-ocean ridge

• subduction

• mantle

Multiple Choice

A subduction zone is formed ________________.

• when an oceanic plate sinks below a continental plate creating a mountain range

• when an oceanic plate sinks below a continental plate creating a mid-ocean ridge and rift valley

• when a denser oceanic plate sinks below another oceanic plate creating an oceanic trench and usually underwater volcanoes

• at transform boundaries

Multiple Choice

Oceanic Trenches are found at subduction zones.

• True

• False

Multiple Choice

This diagram shows an island volcanic arc. Which types of tectonic plates are found here?

• Convergent O-O plates

• Divergent O-O plates

• Convergent O-C plates

• Divergent O-C plates

Multiple Choice

Oceanic Trenches are found along _______________.

• O-C convergent boundary

• O-C & O-O convergent boundaries

• O-C divergent boundary

• O-C & O-O divergent boundaries

Multiple Select

What is/are the difference(s) between diagram X and Y?

• X shows O-C convergence, Y shows O-O convergence

• Volcanoes in X are found on land, Volcanoes in Y are found under water

• X shows convergence, Y shows divergence

• Fold mountains can be found in X but not Y

Dropdown

The ​

Select answer

oceanic plate will ​

Select answer

beneath the ​

Select answer

oceanic/continental plate.

Multiple Choice

How are volcanic island arcs formed?

• At a divergent boundary between two oceanic plates
• At a convergent boundary where an oceanic plate subducts beneath another oceanic plate
• At a transform boundary between two continental plates
• At a convergent boundary between two continental plates

Reorder

Rearrange the following in order to show the tectonic processes at the O-O Convergent plate boundary.

• Two oceanic plates collide

• The denser plate subducts beneath the other plate, Forming a deep depression known as an oceanic trench in the subduction zone

• Subducting plate melts, forming magma

• Magma rises through weak areas in the crust to the Earth's surface

• Forming a chain of submarine volcanoes, which may eventually rise to form volcanic islands

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