Exam 21: Structural Geology and Plate Tectonics

When an earthquake occurs, the point of initial energy release is called the earthquake's ______________.

The three types of plate boundaries are convergent, divergent, and ______________ boundaries.

The difference in time between the arrival of S waves and the arrival of P waves can be used to determine

An earthquake of what magnitude on the Richter scale is the smallest felt by humans?

What type of forces result in strike-slip faulting?

Earth's continental crust ranges in thickness from about

The San Andreas fault in California is thought to be a boundary of two plates

Tsunami is the correct term for what was formerly referred to as a(n) ______________ wave.

The Andes Mountains in South America are examples of ______________ mountains.

The Wasatch Mountains in Utah are examples of ______________ mountains.

Which is not a general classification of mountains?

Alfred Wegener postulated that the continents were once part of a single supercontinent that he called ______________.

A description of the severity of the damage caused by an earthquake is given by its ranking on the ______________ scale.

The sharply defined boundary that separates the crust from the mantle is called the ______________.

The lithospheric plates are believed to be put into motion by the driving force of ______________ cells in the asthenosphere.

The location on Earth's surface directly above an earthquake's focus is called

Earthquake P waves are

Seafloor spreading occurs along ______________.

A simplified explanation of mountain building is provided by the theory of

A(n) ______________ fault occurs as the result of expansive forces.