Seafloor Spreading Concepts

The youngest rocks on the ocean floor are located ____.

• near continents

• at mid-ocean ridges

• far from mid-ocean ridges

• near Asia

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

Tags

NGSS.MS-ESS2-3

Process by which new ocean crust forms.

• Seafloor spreading

• Continental drift

• Mid-ocean ridge

• Rift

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

The OLDEST seafloor is located? 

• Closest to the mid-ocean ridge
• Farthest from the mid-ocean ridge

True or False : Sea-floor Spreading adds new material to the ocean floor?

• True
• False

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

_______ are mountain chains on the ocean floor.

• Sea-floor ridges

• Mid-ocean ridges

• Tectonic plates

• Photosynthesis

Tags

NGSS.MS-ESS2-3

Mid-ocean ridges are the sites of intense _________ activity.

• emotional

• volcanic

• earthquake

• mathematical

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

As the melted rock cools and hardens,

it forms new ________.

• volcanoes

• hope

• core

• crust

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

___________ is the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations.

• Continental drift

• Sea-floor spreading

• Plate tectonics

• Mid-ocean range

Tags

NGSS.MS-ESS2-3

Old oceanic crust is more dense than new oceanic crust because it is _______________.

• hot

• moving toward a deep-ocean trench

• cool

• closer to the mid-ocean ridge

Tags

NGSS.MS-ESS2-3