NGSS Chemistry Unit 2 Review

Sea-floor spreading begins here.

• Continental shelf

• Sea mounts

• Trenches

• Mid-ocean ridge

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Why does subduction occur?

• Old crust is more dense and gravity helps pull the crust back into the mantle.

• Old crust is less dense and it sinks back into the mantle.

• Old crust is warm and melts back into the mantle.

• Old crust has no where else to go but through trenches.

Tags

NGSS.MS-ESS2-1

Convection currents happen when

• Rock/magma gets heated and sinks. It then cools down and rises.

• Rock/magma doesn't move.

• Rock/magma gets more dense and rises. It then cools down and sinks.

• Rock/magma gets heated and rises. It then cools down and sinks.

Tags

NGSS.MS-ESS2-1

The only liquid layer inside the Earth.

• Asthenosphere

• Mantle

• Outer core

• Inner core

one tectonic plate moves under another

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

a boundary at which two plates move away from each other

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

Tags

NGSS.MS-ESS2-3

a boundary at which two plate move toward each other

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What type of boundary is in this image?

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

Tags

NGSS.MS-ESS2-3

Which type of crust is more dense?

• oceanic
• continental
• divergent
• pizza

What is the process in which hot molten rock rises, then cools and sinks back to the core?

• plate tectonics
• continental drift
• convection
• divergence