Plate Tectonics

Front

What is subduction?

Back

The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What evidence did Wegener use to conclude that continents move?

Back

Evidence from land features, fossils, and climate.

Tags

NGSS.HS-ESS1-5

Front

Where does subduction occur?

Back

At deep-ocean trenches.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What process adds more crust to the ocean floor?

Back

Sea-floor spreading.

Tags

NGSS.HS-ESS2-1

Front

What is a mid-ocean ridge?

Back

An underwater mountain range formed by plate tectonics.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What are deep-ocean trenches?

Back

Narrow, deep depressions in the ocean floor where subduction occurs.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What is the theory of plate tectonics?

Back

The theory that the Earth's outer shell is divided into several plates that glide over the mantle.

Tags

NGSS.HS-ESS1-5

Front

What is sea-floor spreading?

Back

The process by which new oceanic crust is created at mid-ocean ridges as tectonic plates pull apart.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What is a convergent plate boundary?

Back

A boundary where two tectonic plates collide, often causing subduction.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What happens at divergent plate boundaries?

Back

Tectonic plates move apart, leading to the formation of new crust.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1