8.1-Evidence of plate motions - 2

The ____ crust appears on the ridge.

• Ancient / Old

• Young / New

• Stable

• Continental

The zipper-like chains of under-sea mountains are called ____.

• Trenches

• Plains

• Mid-Ocean Ridges

• Canyons

Tags

NGSS.MS-ESS2-3

When sea-floor spreading occurs, the two sides of the ocean crust move ___ the ridge.

• Toward

• Parallel to

• Away from

• Alongside

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Mid-ocean ridges are extended throughout Earth's oceans for about ____ km.

• 50,000 km

• 100,000 km

• 70,000 km

• 30,000 km

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Earth's surface is composed of moving ____.

• Feathers

• Rocks

• Clouds

• Plates

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

As the distance from the mid-ocean ridge increases, the age of the crust ____.

• Decreases

• Stays the same

• Increases

• Fluctuates

Tags

NGSS.MS-ESS1-4

Hot molten magma comes up to the ocean crust and cools down, to form a new crust. This process is called ____.

• Plate tectonics

• Subduction

• Sea-floor spreading

• Volcanism