Geography chapter 11

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

Mohorovii

_______ is the coherent theory that describes the motion of the Earth's lithosphere and associated processes and results.

Plate tectonics

Which of the following is correct regarding the geologic time scale?

The bulk of Earth's history has occurred during the Precambrian eon.

Which of the following is an example of the principle of uniformitarianism

The processes by which streams carve valleys at present are the same as those that carved valleys 500 million years ago

Limestone formed from the shells of marine organisms is an example of ________ sedimentary rock.

biochemical

The geologic cycle is fueled by

both solar energy and the Earth's internal heat.

Sedimentary rock formed from dissolved minerals that precipitate out of water solution and build up to form rock are

chemical

A batholith forms from

intrusive igneous rock

The three most abundant elements in Earth's crust are

oxygen, silicon, and aluminum.

What type of rock is derived from the bits and pieces of former rocks?

sedimentary

The scientific study of rock strata (layers) is known as ________ and based on the principle of ________.

stratigraphy; superposition

During the past 4 million years, ________ geomagnetic reversals have occurred.

9

________ are sites of upwelling of magma from the mantle independent of plate boundaries.

Hot spots


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