Seafloor Spreading and Plate Tectonics

How were seismometers used?

• To measure wind speed.

• To record every moderate to large earthquake on the planet.

• To track animal movements.

• To monitor ocean currents.

Tags

NGSS.MS-ESS3-2

The boundary where two tectonic plates move towards each other is called a ________ boundary.

• Convergent

• Divergent

• Transform

• Static

Tags

NGSS.MS-ESS2-3

A divergent boundary is where two tectonic plates ______.

• move towards each other

• move away from each other

• slide past each other

• do not move

Tags

NGSS.MS-ESS2-3

What type of boundary involves two plates sliding past each other?

• Convergent

• Divergent

• Transform

• Static

Tags

NGSS.MS-ESS2-3

Convergent boundaries can involve oceanic and ______ crust.

• continental

• divergent

• transform

• static

Tags

NGSS.MS-ESS2-3

Transform boundaries are known for causing ______.

• earthquakes

• volcanoes

• mountain formation

• ocean trenches

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

What is the main characteristic of a transform boundary?

• A) Plates move towards each other

• B) Plates move apart

• C) Plates slide past each other

• D) Plates do not move.

Divergent boundaries are often found at ______.

• mid-ocean ridges

• mountain ranges

• fault lines

• ocean trenches

Tags

NGSS.MS-ESS2-3

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

• Towards the edges, near the eastern and western continents

• Towards the middle of the ocean at ocean ridges

• Towards the north and south poles

• Young seafloor is located randomly throughout the ocean

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

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

• in deep-ocean trenches

• along the edges of all the continents

• along mid-ocean ridges

• at the north and south plate