Stemscopes 7.E.6.5 Seafloor spreading

What evidence helps scientists show how sea floor spreading occurs?

• Ocean Floor Material
• Magnetic Stripes
• Drilling Samples
• All of the Above

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 and erupt to make new sea floor?

• deep ocean trench
• subduction
• mid ocean ridge
• continental crust

Tags

NGSS.MS-ESS2-1

Old oceanic crust is more dense than new oceanic crust because it is

• hot
• cool
• moving
• close to a continent

What process adds more crust to the ocean floor?

• suction
• sea-floor spreading
• subduction
• magnetic stripe

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.MS-ESS2-3

What features form the longest mountain ranges on Earth?

• the mid-ocean ridges
• the deep ocean trenches
• the Rockies
• the Andies

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