CKLA Unit 5 Chapter 2

Front

What is the rate at which tectonic plates move apart along the mid-ocean ridge in the Atlantic Ocean?

Back

About .8-2 inches a year.

Front

What did Inge Lehmann change our view of?

Back

Earth's core.

Front

What is the cornerstone of modern geology?

Back

Plate tectonics.

Front

How do tectonic plates move?

Back

Very slowly and gradually.

Front

What are the effects of plate movement at different boundaries?

Back

All of the above: earthquakes, volcanoes, creation of new crust, destruction of old crust, and formation of mountains.

Front

What are tectonic plates?

Back

Large pieces of Earth's lithosphere that move and interact with each other.

Front

What is seafloor spreading?

Back

The process by which new oceanic crust is formed at mid-ocean ridges.

Front

What is continental drift?

Back

The theory that continents have moved over geological time and were once joined together.

Front

What are the three types of plate boundaries?

Back

Divergent, convergent, and transform boundaries.

Front

What happens at a divergent boundary?

Back

Tectonic plates move apart, creating new crust.