Exam 21: Structural G Eology and P Late Tectonics

In the early 1900s,the scientist named __________ revived the idea of continental drift.

The theory of seafloor spreading was proposed in 1960 by

Earthquake S waves are

The deflection of one plate under another is called ______________.

Because of the ______________ zones formed by S and P waves as they travel through Earth,the outer core is thought to be a viscous liquid.

Secondary seismic waves travel ______________ primary waves in solids.

The part of the mantle located directly below the lithosphere is called the ______________.

Earth's radius is about ______________ mi.

The Grand Tetons are examples of which type of mountain?

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

The lithosphere consists of

Seismic waves that travel through our planet are called ______________ waves.

An earthquake of magnitude ______________ on the Richter scale is the smallest that can be felt by humans.

Geologists view the part of our planet that is called the ______________ as consisting of a number of close-fitting plates.

A(n)______________ ridge system stretches through the major oceans of the world.

Secondary seismic waves travel ______________ (slower or faster?)than primary waves in solids.

Longitudinal seismic body waves are known by the letter ______________.

P seismic waves can travel through ______________.

Longitudinal seismic body waves are known by the letter ______________.

What type of forces result in reverse faulting?