Practice OC.4a Vocabulary

Match the following

• seamount

• A plate boundary where two plates move past each other in opposite directions.

• guyot

• A volcanic mountain rising from the ocean floor that doesn’t reach the surface.

• convergent boundary

• A plate boundary where two plates move toward each other.

• divergent boundary

• A large, flat-topped seamount resulting from erosion of an island volcano when it was above sea level.

• transform boundary

• A plate boundary where two plates move away from each other.

Tags

NGSS.MS-ESS2-3

Match the following

• continental slope

• The slope between the outer edge of the continental shelf and the deep ocean floor.

• continental shelf

• The shallow sea floor that is located between the shoreline and the deep ocean bottom.

• continental rise

• The gently sloping section of the continental margin located between the continental slope and the abyssal plain.

• continental margin

• A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent.

Match the following

• subduction

• A chain of volcanic islands generally located a few hundred kilometers from a trench where there is active subduction of one oceanic plate beneath another.

• volcanic island arc

• The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.

• active continental margin

• Usually narrow and consisting of highly deformed sediments. They occur where oceanic lithosphere is being subducted beneath the margin of a continent.

• trench

• A deep, steep-sided canyon in the ocean floor.

• volcanic arc

• A chain of volcanic mountains formed at an ocean-continental convergent boundary.

Tags

NGSS.HS-ESS1-5

Match the following

• abyssal plain

• A large, flat, almost level area of the deep-ocean basin.

• mid-ocean rise/ridge

• An undersea mountain chain where new ocean floor is produced at a divergent plate boundary; rises are generally shorter, with gentler slopes than ridges.

• rift valley

• A deep valley that forms where two plates move apart.

• passive continental margin

• Margins that consist of a continental shelf, continental slope, and continental rise. They are associated with divergent plate boundaries and therefore experience little volcanism and few earthquakes.

Tags

NGSS.MS-ESS2-2

Match the following

• guyot

• 
• convergent boundary

• 
• seamount

• 
• transform boundary

• 
• divergent boundary

• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Match the following

• continental slope

• 
• continental shelf

• 
• continental margin

• 
• continental rise

• 

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Match the following

• active continental margin

• 
• volcanic island arc

• 
• subduction

• 
• trench

• 
• volcanic arc

• 

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Match the following

• mid-ocean rise/ridge

• 
• rift valley

• 
• passive continental margin

• 
• abyssal plain

• 

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3