Exam 21: Structural G Eology and P Late Tectonics

Seismic waves that propagate through Earth are known as

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

The discovery of seafloor spreading led to acceptance of the theory of

Most earthquake damage is caused by

Evidence of seafloor spreading along the Mid-Atlantic Ridge is given by

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

Geologists view the section of Earth called the ______________ as consisting of a number of close-fitting plates.

The San Andreas fault lies on the boundary of the Pacific plate and the ______________ plate.

A mid-ocean ridge is formed at the boundary of two plates

What is the name of the surface along which rock formations move?

One plate pulls away from another and new ocean rock is formed at the type of plate boundary called ______________.

Between the crust and the outer core lies the region called the ______________.

The rock on the upper side of an inclined fault plane is called the hanging wall,and the rock on the underside is called the ______________.

Large fractures in Earth's surface that are associated with the movement of lithospheric plates are called ______________.

What is the name of the earthquake scale that describes the severity of an earthquake by noting the amount of damage it causes?

When an earthquake occurs,the location on Earth's surface above the point of initial energy release is called the earthquake's ______________.

The structural region of Earth that has the greatest volume is the

The Cascade Mountains in the northwestern United States are examples of ______________ mountains.

The idea of continental drift was not generally accepted when Wegener proposed it because

One plate slides horizontally past another plate at the type of plate boundary called ______________.