Plate Tectonics

Front

The geological theory of _______ states that pieces of Earth’s lithosphere are in constant, slow motion.

Back

plate tectonics

Front

What are Tectonic Plates?

Back

The Plates that move the Continents

Front

The San Andreas Fault in California is known as an active earthquake area. What type of boundary is it?

Back

Transform

Front

Scientists think that convection currents flow in Earth’s _______.

Back

mantle

Front

How is it possible for new crust to be formed without increasing the surface area of the Earth?

Back

Crust is destroyed at the same time it is created.

Front

What is the outermost layer of the Earth called?

Back

Crust

Front

What are the three main types of plate boundaries?

Back

Convergent, Divergent, Transform

Front

What is subduction?

Back

The process where one tectonic plate moves under another and is forced into the mantle.

Front

What is sea-floor spreading?

Back

The process by which new oceanic crust is created at mid-ocean ridges and older crust is pushed away.

Front

What is a convergent boundary?

Back

A tectonic plate boundary where two plates collide.