Duplicate of Chapter 17 Review-Plate Tectonics

The________states that Earth's crust and rigid upper mantle are broken into huge slabs of crust

A word that means, "All Earth."

What does F refer to?

  Some early mapmakers thought that the coastline of S. America matched the coastline of Asia

The boundary marked by the letter Y is a(n) _______________.

When a volcanic mountain range is formed on a continent, parallel to a trench we have ______.

Scientists rejected Wegner's hypothesis because he couldn't explain how or why continents move.

Features found in oceanic-oceanic divergent boundaries include __________.

Wegner's hypothesis of ___ stated that Earth's continents were once joined by a single landmass

In a divergent boundary, where oceanic ridges are formed, what direction do the plates move in?

Convection currents transfer thermal energy which allows for the movement of tectonic plates.

A vast underwater mountain chain is called a(n) _____________.

The magnetometer enables scientists to detect small changes in Earth's magnetic field. 

___________ is a type of crust being subducted in section S

A narrow, elongated depression in the sea floor is called a(n) ________________.

Compared to ocean crust near trenches, crust near ridges is _______.

The study of Earth's magnetic record is known as__________.

What does E refer to?

continental-continental plate collisions produce ________________.

____________ is described as the study of the history of Earth's magnetic field.

_____________ are places where plates slide horizontally past each other.

A(n) ____________ is a feature in the area marked by circle A

Each cycle of spreading and intrusion of magma during seafloor spreading results in ______.

Continental drift was not widely accepted at first because _________.

If two continental plates converge, a subduction zone forms

According to plate tectonics, plates move away, deflect, and move horizontally from each other.

When a an arc of volcanic islands are formed parallel to a trench we have ______.

____ is a fossil fern that helped support Wegner's theory of continental drift.

For an uplifted mountain range to occur, where the land is folded, plates have to move _____.

The boundary marked by the letter X is a(n) _______________.

The youngest part of the ocean floor is found ________.

What happens to the geothermal gradient as you descend from the crust to the core?

Continental Drift explains how ocean floor is created at ridges and destroyed at trenches.

Early mapmakers thought Earth's continents had moved based on ________.

What does D refer to?

The driving force behind the movement of tectonic plates is ___________

The magnetic pattern and age on one side of the ocean ridge is ___________.

What does C refer to?

In a divergent boundary, where ocean ridges are formed, what types of plates are involved?

What does B refer to?

Rift vallies have tectonic plates that move ______ each other at their boundaries.

These boundaries typically have long faults with numerous small earthquakes.

The existence of coal in Antarctica indicates that it once had _____.

What does A refer to?

As new seafloor moves away from the ridge it cools and becomes less dense than material below.

______________ occurs when one tectonic plate descends below another.

The transfer of thermal energy by the movement of heated matter is called _______.

A(n) ____________ is a feature in the area marked by circle B

A(n) ____________ is a feature in the area marked by circle D

A rift valley is a result of what type of plate interaction?

Numerous small earthquakes occur along ______ boundaries.  These boundaries are also very long.

what feature do you find along continental-continental divergent boundaries?

Tectonic plates _______________.

The transfer of thermal energy by the movement of warmed matter is called convection.

At an oceaninc-oceanic convergent boundary, ________.

Boundaries where plates move apart are called ______________.