Seafloor Spreading

What were 2 kinds of evidence were used to prove that the seafloor spread?

• rock formations, WWII shipwrecks

• magnetic seafloor stripes, WWII ship logs

• magnetic seafloor stripes, age of rocks

Tags

NGSS.HS-ESS1-5

What technology was used during WWII to detect enemy submarines and produce the first map of the seafloor?

• Sonar
• Radar
• GPS

Tags

NGSS.MS-PS4-2

Process by which new ocean crust forms.

• Seafloor spreading

• Continental drift

• Mid-ocean ridge

• Rift

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

The zone where one plate slides under another is called the

• Convergent zone
• Subduction zone
• Transform zone
• Mantle zone

Tags

NGSS.MS-ESS2-3

Undersea mountain range.

• Rift
• Mid-ocean ridge
• seafloor spreading
• Continental drift

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

The OLDEST seafloor is located? 

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

Tags

NGSS.HS-ESS1-5

What are Mid-Ocean Ridges?

• A chain of underwater waterfalls 
• A chain of underwater volcanos
• A chain of underwater mountains
• A chain of underwater rocks

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Sea-floor spreading begins at the

• Deep ocean trench

• Mid-ocean ridge

• Continent's edge

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Older crust is found towards the...

• Mid-ocean ridge
• Deep-ocean trench
• Asthenosphere

Tags

NGSS.HS-ESS1-5

Why does oceanic crust sink below the continental crust during subduction

• oceanic crust is less dense

• oceanic crust is more dense

• oceanic crust is older

• oceanic crust is warmer

Tags

NGSS.HS-ESS1-5