Exam 8: The Dynamic Planet

What percent of Earth's crust is composed of only eight natural elements?

Mafic minerals are ________ minerals.

Silt and clay are likely to be deposited in a beach environment.

The mineral crystals in a sill would be ________ those in a lava flow.

Which layer of the planet forms 80 percent of Earth's total volume, and has an average density of 4.5 grams per cm²?

A guiding principle of Earth science is the principle of uniformitarianism-as opposed to catastrophism.

The size of sediment transported from an area and subsequently deposited is a function of

Which of the following is not part of the hydrologic cycle?

Continental crust is basically ________, whereas oceanic crust is basically ________.

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

The magma that fuels and produces the volcanic activity around the Pacific Ring of Fire is derived from the

Which of the following gives the correct sequence of layers in the mantle, from center to surface?

Three types of rock-forming processes compose the

Earth's interior is

The deepest places in the ocean are those in which rifting occurs.

Heat energy and new materials are brought to the surface from the interior by the

An element or combination of elements that forms an inorganic, natural compound is called a

When geologists or archaeologists dig downward into a unit of rock or sediment, they are digging "back in time." This fact is based on the principle of ________.

The aesthenosphere can best be described as

The ancient roots of mountains are usually composed of ________ rocks.