Seafloor Spreading

What evidence helps scientists show how seafloor spreading occurs?

• Ocean Floor Material

• Magnetic Stripes

• Drilling Samples

• All of the Above

Tags

NGSS.MS-ESS2-3

What happens when subduction occurs?

• Parts of the crust fall into the mantle

• Parts of the crust fall into the core

• Parts of the crust fall into space

• None of the Above

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

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-ESS2-1

___________ help explain why Earth is not getting any larger even though the tectonic plates are always moving.

• earthquakes
• subduction zones
• fossils
• volcanoes

Tags

NGSS.MS-ESS2-2

Where does molten material rise to make new seafloor?

• deep ocean trench

• subduction zone

• mid-ocean ridge

• continental crust

A _________ is formed where one plate is sliding under another one (subduction).

• ridge

• trench

What process adds more crust to the ocean floor?

• suction

• seafloor spreading

• subduction

• magnetic stripe

What changes the size and shape of the oceans?

• subduction only

• seafloor spreading only

• both subduction and seafloor spreading

Tags

NGSS.MS-ESS2-3

What forms the longest mountain ranges on Earth?

• the mid-ocean ridges

• the deep ocean trenches

• the Rocky Mountains

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

The farther from a mid-ocean ridge a rock sample is taken the ______________ the rock is.

• hotter
• softer
• younger
• older

Tags

NGSS.MS-ESS1-4