plate tectonics

Front

What causes Earth's tectonic plates to move?

Back

Convection currents in the mantle.

Front

What is the plastic layer of the mantle on which pieces of the lithosphere move?

Back

Asthenosphere.

Front

What do we call an area where more than two tectonic plates interact in different ways?

Back

Plate boundary zones.

Front

What occurs at a divergent boundary?

Back

Plates pull apart.

Front

How do temperature, pressure, and density change as you travel from the inner core to the crust?

Back

They all decrease.

Front

What is the outermost layer of the Earth called?

Back

Crust.

Front

What is the term for the boundary where two tectonic plates slide past each other?

Back

Transform boundary.

Front

What geological feature is commonly formed at convergent boundaries?

Back

Mountains or deep ocean trenches.

Front

What is the main driving force behind plate tectonics?

Back

Heat from the Earth's interior.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is denser and thinner than continental crust.