Unit 3 Checkpoint B/C

Sea-floor spreading begins at the

• Deep ocean trench

• Mid-ocean ridge

• Continent's edge

As the magma comes out of the mid-ocean ridge, it ______________ and _______________ .

• cools

• warms

• shrinks

• solidifies

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

New crust is always formed at the...

• mid-ocean ridge
• deep-ocean trench
• asthenosphere

Where would the oldest rock be found?

• L
• M
• N
• O

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What is the Mid ocean ridge?

• a continental mountain range

• a valley system in the middle of the ocean

• an underwater mountain range

• the middle of the ocean

Tags

NGSS.MS-ESS2-3

Where would a mid-ocean ridge be found?

• R

• M

• C

• All of the above

Tags

NGSS.MS-ESS2-3

Which letter shows where subduction occurs?

• M

• R

• G

• L

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Massive pieces of broken crust that are part of the Earth's crust and upper mantle

• Tectonic plates

• Trenches

• Divergent boundary

• Continental shelves

The OLDEST seafloor is located? 

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

Tags

NGSS.HS-ESS1-5

What happens when Subduction occurs?

• Plates go under other rock and melt into magma

• Plates go above other rock and cool into rock

• Parts of the crust fall into space

• None of these

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3