Exam 9: The Pace of Change

Metamorphism that occurs over broad areas when the pressure and associated heat of of overlaying rocks or other tectonic forces cause the rocks to undergo deformation is known as

The arrangement of continents is permanent with only minor changes wrought by crustal movement (e.g.,earthquakes).

Which rock type makes up approximately 90% of Earthʹs crust?

The crust is thickest under mountains and thinnest under the oceans.

The three basic rock types are

The transition zone from the upper mantle to the crust is known as the________ discontinuity.

On average,the thickness of oceanic crust is_______ that of continental crust

Humans can contribute to both the endogenic and exogenic processes shape Earth.

Present the main assumptions of uniformitarianism.

What type of rock forms from the solidification of molten material?

Convergent plate boundaries occur in areas of seafloor spreading.

The core comprises 1/3rd of Earthʹs mass,but only 1/6th of its volume.

Which of the following is NOT an example of an age -relationship based on absolute dating?

Contact metamorphism involves changes in the texture and mineralogy of a rock caused by the extreme heat and pressure of intruding magma.

At which of the following locations is new ocean crust being formed?

Mid-ocean ridges occur where

Which of the following gives the CORRECT sequence of layers in Earth,from the surface to the center?

The rigid crust and uppermost mantle are known collectively as the

How does the ocean floor preserve evidence of past magnetic reversals.

The plastic layer in the mantle from about 70 to 250 km (43 to 155 mi)in depth is known as the