Are trenches divergent or convergent?
convergent plate boundaries In particular, ocean trenches are a feature of convergent plate boundaries, where two or more tectonic plates meet. At many convergent plate boundaries, dense lithosphere melts or slides beneath less-dense lithosphere in a process called subduction, creating a trench.
What do divergent boundaries cause?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust.
Where are trenches usually formed?
Trenches are long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another.
What type of plate boundary typically forms trenches?
convergent plate boundary If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common.
What do divergent boundaries create on land?
Plate Divergence on Land A divergent plate boundary on land rips apart continents (Figure below). When plate divergence occurs on land, the continental crust rifts, or splits. This effectively creates a new ocean basin as the pieces of the continent move apart.
What landform occurs at a divergent boundary?
Two landforms that are created from divergent boundaries are rift valleys and mid-oceanic ridges.
Which of the following boundaries does not form trenches?
No, ocean trenches do not occur at divergent plate boundaries. They are formed at convergent boundaries.
How are ocean trenches formed quizlet?
Ocean trenches are deep sections of the ocean where an oceanic plate is usually sinking below a continental plate. How are they formed? They are formed in the subduction zone as the denser oceanic plate is subjected under the continental plate.
What do convergent boundaries cause?
A convergent plate boundary is a location where two tectonic plates are moving toward each other, often causing one plate to slide below the other (in a process known as subduction). The collision of tectonic plates can result in earthquakes, volcanoes, the formation of mountains, and other geological events.
What are 3 things that are formed at a divergent boundary?
Effects that are found at a divergent boundary between oceanic plates include: a submarine mountain range such as the Mid-Atlantic Ridge; volcanic activity in the form of fissure eruptions; shallow earthquake activity; creation of new seafloor and a widening ocean basin.
Which type of convergent boundary creates trench?
subduction zones If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common at subduction zones as well.
What landforms are created by divergent boundaries?
At DIVERGENT boundaries the plates move apart allowing molten magma to rise and form new crust in the form of ridges, valleys and volcanoes. Landforms created by divergent plates include the Mid Atlantic Ridge and the Great African Rift Valley.
Do divergent plate boundary occur at deep-ocean trenches or mid ocean ridges?
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth's tectonic plates spread apart.
Which kind of plate tectonic boundary creates an ocean trench quizlet?
As oceanic crust sinks under continental crust the continental crust buckles to form a range of mountains. These mountains, like island arcs, parallel a deep-ocean trench but form at continental to oceanic convergent plate boundaries.
What does divergent make?
Divergent (Spreading):This is where two plates move away from each other. Molten rock from the mantle erupts along the opening, forming new crust. The earthquakes that occur along these zones, called spreading centers, are relatively small.
Is the Mariana Trench a divergent boundary?
In the case of a convergent boundary between two oceanic plates, one is usually subducted under the other, and in the process a trench is formed. "The Marianas Trench (paralleling the Mariana Islands), for example, marks where the fast-moving Pacific Plate converges against the slower moving Philippine Plate.
What do divergent plate boundaries form?
A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.
Do divergent plate boundary occur at deep ocean trenches or mid-ocean ridges?
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth's tectonic plates spread apart.
What causes deep trenches quizlet?
Deep trenches are often formed where tectonic plates are being subducted and earthquakes are common. As the sinking plate moves deeper into the mantle, fluids are released from the rock causing the overlying mantle to partially melt.
Are ocean trenches divergent?
Ocean trenches cannot be divergent; however, there are three types of boundaries that explain the process of two tectonic plates coming together or separating. These different boundaries include 1) divergent, 2) transform, and 3) convergent. Ocean trenches are convergent, meaning they come together.