Plate Tectonics

All are evidence supporting plate tectonics except

A graben is characterized by 

Which of the following is the correctorder of arrival of seismic waves

Continental drift was mostly denied because he could not

early Paleozoic era S. AmericaAfrica, Australia, Antarctica,+ India made up what supercontinent

Duringthe late Paleozoic era Eurasia, N. America +Siberia made up what northern supercontinent

New crust forms at 

The most violent volcanic activity is associated with ______

 Which of the following shows the correct order (left to right) ofdecreasing magma viscosity?

The cells of this primitive organism lacked anucleus around their DNA

Which of the following is NOT a piece of evidence Wegner had?

Which of the following factors help determine the type of volcanic eruption?

The mechanism by which rocks store andeventually release energy (earthquake) is called______

 ______________ is a major dissolved volatile in both magma and gases

In thrust faulting (convergent boundaries) _________.

Which of the following represents the greatestexpanse of geologic time?

What order did life appear?

_______ tend to increase the explosive potential of a magma body beneath avolcano

____ most effectively outline plate boundaries

 Mammals became the dominant land animal duringthe _______ era. 

volcanoes and deep valleys of E Africa are related to

Magma tends to rise toward Earth’s surface principally because ________

A very long-lived magma source located deep in the mantle is called a

How many seismographs do we need to find an epicenter of an Earthquake?

Deep-Ocean trenches are most abundant around rim of ______ palte

When an earthquake occurs, energyradiates in all directions from this source

Precambrian rock record indicates muchof Earth’s first free oxygen combined with ___ in H2O

A _______ fault has little to no vertical movement

The position on the Earth’s surfacedirectly above the earthquake source is called ______

Most of our knowledge about Earth’sinterior is obtained from

Intrusive igneous formation that is tabularand concordant (parallel to the rock it intrudes)

Typical rate of sea-floor spreading is 

The temperature below which magnetic material can retain a permanent magnetization is called 

Linear magnetic  patterns on the ocean floor look life

Abundant fossil evidence did not appear in thegeological record until about ________

distance between a seismologicalrecording station and  epicenter is detected from the _______.

Which is thought to drive plate motion

What is a fundamental assumption underlying plate tectonics

Modern day red sea explains plate tectonics by

Deep ocean trenches are evidence for