Unit 3

Front

What is the primary cause of tectonic plate movement?

Back

Convection currents in the mantle.

Front

What is a Batholith?

Back

A large portion of pluton that has been exposed by erosion.

Front

What is a Richter scale?

Back

A scale used to measure the magnitude of an earthquake.

Front

What is an Focus in relation to earthquakes?

Back

The true origin of an earthquake.

Front

What is a Sill?

Back

Igneous rock between two layers of rock.

Front

What are tectonic plates?

Back

Massive slabs of Earth's lithosphere that move and interact at their boundaries.

Front

What is the difference between a focus and an epicenter?

Back

The focus is the true origin of an earthquake, while the epicenter is the point on the surface directly above the focus.

Front

What is the role of convection currents in the mantle?

Back

They drive the movement of tectonic plates.

Front

What is a Pluton?

Back

A body of intrusive igneous rock that has crystallized from molten magma beneath the Earth's surface.

Front

What is the significance of the Ring of Fire?

Back

It is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.