When two oceanic plates converge at a boundary, they create a deep-sea trench and volcanic island arc. When two continental plates meet, they form mountains. When an oceanic and continental plate converge, it forms a trench and volcanoes. Convergent boundaries often experience earthquakes due to the collision and movement of plates.

1. Shirleyka Hector
Class-J

2. ESSENTIAL VOCABULARY
Word Definition Translation
Deep-Sea Trench Also know as oceanic
trench. It is a corridor-
like structure on the
ocean floor.
• tranche twou nan fon –
lanmè
• hauturière tranchée
• zanja de aguas profundas
Mountains A hill formed by
elevated mass of
land.
• Mòn
• Montagnes
• montañas
Volcanic Arc A circle of volcanoes
above a Subduction
one
• arc vòlkanik
• arc volcanique
• arco volcánico
Island Arc& Trenches A curved chain of
volcanic island.
 zile arc ak tranche
 arc insulaire et tranchées
 arco de islas y trincheras

3. • When hot magma in the mantle is churning, it
causes plates to move in different directions. At a
convergent boundary, two plates meet one
another, they converge. There are two types of
plates—oceanic and continental. When two
oceanic plates meet, they create a trench and
island arc. When two continental plates meet, they
create a mountain range. When a continental plate
and an oceanic plate meet, they create a trench
and a volcano. Lastly, there are usually earthquakes
at a convergent boundary because of the
movements of the plates colliding with each other.

5. QUESTIONS
• What is another name for a deep-sea
trench?
• What is the name of a feature formed by a
continental-continental convergent
boundary?
• What is a volcanic arc?

6. ANSWERS
• Another name for a deep –sea trench is an
oceanic trench.
• A mountain is formed by a continental-
continental convergent boundary.
• A volcanic arc is a chain of volcanoes
above a sub-duction zone.