5-4 Sea-Floor Spreading

What do you call the device used to detect underwater objects?

• sonar

• seismograph

• ultrasound

• infrasound

Tags

NGSS.MS-PS4-2

What is it called where chains of mountains rise up to form the ocean floor?

• Mid-Ocean Ridge

• Subduction

• Deep-Ocean Trench

• Sea-Floor Spreading

• Magnetic Striping

Tags

NGSS.MS-ESS2-3

What is it called when the ocean floor sinks beneath a deep-ocean trench?

• Mid-Ocean Ridge

• Deep-Ocean Trench

• Sea-Floor Spreading

• Subduction

• Magnetic Striping

Tags

NGSS.MS-ESS2-3

A place in the ocean where the oceanic crust bends downward is known as a _____________.

• Mid-Ocean Ridge

• Subduction

• Deep-Ocean Trench

• Sea-Floor Spreading

• Magnetic Striping

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

Tags

NGSS.MS-ESS2-3

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

Tags

NGSS.MS-ESS2-3

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

Tags

NGSS.MS-ESS2-3

T/F? Due to sea floor spreading, all oceans are always expanding.

• True

• False

Tags

NGSS.MS-ESS2-3

Which scientist proposed the theory of sea-floor spreading?

• Isaac Newton

• Rube Goldberg

• Alfred Wegener

• Harry Hess

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Where does sea-floor spreading occur?

• mantle

• mid-ocean ridges

• subduction zones

• deep-ocean trenches

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3