Sea Floor Spreading

Which process adds more crust to the ocean floor?

• suction

• sea-floor spreading

• subduction

• magnetic stripe

Tags

NGSS.MS-ESS2-2

Sea-floor spreading occurs at mid-ocean ridges.

• True

• False

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which features form the longest ranges on Earth?

• the mid-ocean ridges

• the deep-ocean trenches

• the Rockies

• the Andes

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Which process or processes change the size and shape of the oceans?

• subduction only

• sea-floor spreading only

• both subduction and sea-floor spreading

• both drilling for samples and subduction

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Molten material erupts inside the Central Valley of mid-ocean ridges.

• True

• False

Tags

NGSS.MS-ESS2-3

The pattern of magnetic stripes in rocks on either side of the mid-ocean ridge is the same.

• True

• False

Tags

NGSS.MS-ESS2-3

The source of new oceanic crust being produced at the mid-ocean ridge is known as __________________.

• Mid-Ocean Ridge

• Subduction

• Deep-Ocean Trench

• Sea-Floor Spreading

• Magnetic Striping

Which of the following evidences does not support the sea floor spreading theory?

• strange pillow shaped rocks formed from cooled molten material

• ocean rocks organized in magnetized stripes

• the further the rocks are from the ridge the older they are

• underwater volcanoes

Which scientist proposed the theory of sea-floor spreading?

• Isaac Newton

• Rube Goldberg

• Alfred Wegener

• Harry Hess

Evidence that the Earth's magnetic poles have flipped and is linked to sea-floor spreading is called _________?

• Mid-Ocean Ridge

• Subduction

• Deep-Ocean Trench

• Sea-Floor Spreading

• Magnetic Striping