Exam 3 questions

The _______ is liquid and is responsible for producing Earth's magnetic field

Outer core

Which of the following statements best describes seawater?

Seawater is a sollution

_________ dunes are the largest in size and have multiple slip faces produced by winds from varying directions

Star

Folded layers of rock can form a wavelike pattern of troughs and crests. The layers (i.e., downward fold) form

a syncline

After a geomorphic threshold is crossed, the landscape

adjusts to a new equilibrium condition

Earth's magnetic poles

are migrating approximately 60 km (37 mi.) per year

Which dunes are crescent shaped, with the horns pointing downwind

barchan

Seawater with less than 3.5% salinity is termed

brackish

When the height of a wave exceeds its vertical stability (what happens to waves at shore) the wave is called a

breaker

A large region where a craton is exposed at the surface is known as

continental shield

The term eolian refers to

erosion, transportation, and deposition by the wind

The weathering process responsible for breaking this granite slab is likely

frost wedging

The ability of the wind to move materials

is small compared to other transporting agents, such as water and ice

Landscapes formed by the dissolution of limestone and other carbonate rock, characterized by pitted, bumpy surface

karst topography

When the Sun and Moon form a right angle with Earth, the ________ occurs and results in the ________ tidal range.

neap tides; lowest

In most areas, the upper surface of bedrock is partially weathered to broken-up rock called

regolith

The transport of small sand particles (.07 to .20 mm) along the ground in bouncing and skipping action is known as

saltation

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

sedimentary

A slow, persistent mass movement of surface soil is called

soil creep

The principle that landscape formation is balance between endogenic and exogenic processes is called

the dynamic equilibrium model

An earthquake is best described as

the sharp release of energy in the Earth's crust that creates seismic waves

Which of the following is an endogenic process

volcanism

Distinctive, elongated wind-sculptured formations are called

yardangs

The worldwide average salinity of seawater is

3.5%