Sea-Floor Spreading

Which scientist made the surprising discovery of what appeared to be stitches on the ocean floor?

• Marie Tharp

• Charles Darwin

• Alfred Wegener

• None of these

Tags

NGSS.MS-ESS2-3

What looked like stitches on a baseball that ran along some ocean floors?

• Holes

• Mid-Ocean Ridges

• Stitches

• Subduction

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

What is sonar?

• A device that detects life.

• A device to measure sound.

• A device using UV rays.

• A device using sound waves to measure distance.

Tags

NGSS.MS-PS4-2

Which is not evidence of seafloor spreading?

• Evidence from ocean material

• Evidence from magnetic stripes

• Evidence from climate

• Evidence from drilling samples

Tags

NGSS.MS-ESS2-3

The youngest rocks on the ocean floor are located ____.

• Near continents

• At mid-ocean ridges

• Near Indiana

• Far from mid-ocean ridges

Tags

NGSS.MS-ESS2-3

Process by which new ocean crust forms.

• Seafloor spreading

• Rift

• Continental drift

• Deep ocean ridge

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

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

• True

• False

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

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

• Mathematical

• Earthquake

• Volcanic

• Emotional

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

At a mid-ocean ridge, melted rock rises through cracks in the _________.

• Sea floor

• River

• Mantle

• Inner core

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

As the melted rock cools and hardens,

it forms new ________.

• Volcanoes

• Core

• Hope

• Crust

Tags

NGSS.MS-ESS2-2