Plate Tectonics/Seafloor Spreading

In sea-floor spreading, molten material rises from the mantle and erupts

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

• convection.

• continental drift.

• subduction.

• conduction.

Tags

NGSS.MS-ESS2-2

A place where two plates slip past each other, moving in opposite directions, is known as a _______

• transform boundary

• divergent boundary.

• convergent boundary.

• rift valley.

Tags

NGSS.MS-ESS2-3

The place where two plates come together is known as a _______

• transform boundary.

• divergent boundary.

• convergent boundary.

• rift valley.

Tags

NGSS.MS-ESS2-3

The Himalayas in Asia are an example of what type of plate boundary?

• divergent
• continent-to-continent convergent
• ocean-to-continent convergent
• transform

Tags

NGSS.MS-ESS2-3

When one tectonic plate __________ under another at a convergent boundary it sinks back in the mantle.

• subducts
• falls
• sinks

Tags

NGSS.MS-ESS2-3

Process by which new oceanic crust forms.

• Seafloor spreading

• Continental drift

• Mid-ocean ridge

In the Atlantic ocean, where is the youngest seafloor located?

• Towards the edges, near the eastern and western continents

• Towards the middle of the Atlantic ocean

• Towards the north and south poles

• Young seafloor is located randomly throughout the ocean

True or False: Our continents will eventually become a supercontinent (like Pangaea) again, far in the future

• True
• False

True or False: The plates will never stop moving

• True
• False

Tags

NGSS.MS-ESS2-3