Exam 9: The Pace of Change

Oceanic crust is denser than continental crust.

The percentage of oxygen is the crusts is _______than that in the atmosphere.

The rock cycle is fueled both by the hydrologic cycle and the tectonic cycle.

The dominant element in continental crust are

Which of the following is an exogenic process?

_______is the theory that describes the motion of Earthʹs lithosphere.

Sedimentary rocks are more a product of the_______ system whereas metamorphic and igneous rocks are more a product of the_______ system.

Endogenic processes cause warping,folding,faulting,and uplift of Earthʹs surface.

The three most abundant elements in Earthʹs crust are

Small plutons that form parallel to layers of sedimentary rock are known as

A batholith forms from

The principle that the same physical processes currently active in the environment were operating throughout Earthʹs history is known as

Major events in Earthʹs history,such as major extinctions,determine the boundaries between the intervals in the geologic time scale.

Earthʹs interior composition has been inferred by the use of seismic waves.

The thickness of Earthʹs crust ranges from

Boundaries between intervals of the geological time scale are determined by

A mineral can be either organic or inorganic.

Ocean floor is destroyed along transform faults.

Alfred Wegenerʹs theory of continental drift was immediately accepted by the scientific community when it was proposed.

Ocean floor subducts under continents because