Show:
Gargantuan Glaciers
Wild Wind Whistles When Weathering Occurs
Mass Movements Make a Mess!
Caution!
Land is Unstable and May Fall At Any Time
After Glacierzilla Attacks...
100
Glaciers that cover broad areas of land, stretching over 100s of miles are called...?
Continental glaciers!
100
Which particles can wind move most easily?
Wind moves silt most easily.
100
Which of the following has the fastest movement: Solifluction Creep Mudflow or Avalanche?
Avalanche of course!
100
Which is the underlying force that causes all forms of mass movement?
Gravity is the underlying force that causes all mass movement.
100
Glaciers deposit unsorted ridges ridges of till called...?
Moraines are unsorted ridges ridges of till deposited by glaciers.
200
What type of valley is formed by a glacier?
A U-shaped valley!
200
What weathering agent mainly created the arches in Arches National Park?
Wind made those arches!
200
What is a factor that can trigger a mass movement, shaking materials like soil loose?
An earthquake can trigger a mass movement.
200
Swiftly moving mixtures of mud and water are called...?
Swiftly moving mixtures of mud and water are called mudflows.
200
State a fact about the assortment of sediments deposited by glaciers and rivers.
Glacial deposits are unsorted; River deposits are sorted.
300
Which does not affect the speed of a valley glacier's movement? A. slope of valley floor B. shape of valley wall C. temperature and thickness of ice D. internal chemistry of the glacier
D. internal chemistry of the glacier
300
What property is used to classify dunes?
Shape is used to classify dunes!
300
When the mass of a material in a landslide moves along a curved surface, what results?
A slump results.
300
True or False? Having vegetation and trees can increase the risk of a mass movement.
False! Having vegetation and trees can REDUCE the risk of a mass movement.
300
What are the elongated landforms made of older moraines over which glaciers have moved?
Drumlins!
400
The last continental ice age covered approximately what percent of Earth's surface?
30% of Earth's surface was covered by the last continental ice age.
400
Name the 4 types of dunes formed by wind erosion and deposition.
Barchan, Transverse, Parabolic and Longitudinal Dunes.
400
What is a way to reduce the risk of mass movements? HINT: Think of the slopes of land.
Avoid construction of structures on vulnerable slopes.
400
Landslides and rockfalls can be controlled by covering steep slopes with materials such as, __________, and constructing fences along highways where mass movements are common.
Landslides and rockfalls can be controlled by covering steep slopes with materials such as, steel nets, and constructing fences along highways where mass movements are common.
400
Where are large deposits of glacial loess primarily found?
Large deposits of glacial loess are primarily found in the Midwestern United States.
500
What is a deep depression, scooped out by a valley glacier?
A cirque!
500
What is abrasion and what are the rocks shaped by wind abrasion called?
Abrasion is the process of erosion that occurs when particles such as sand rub against the surface of rocks or other materials. Rocks that have been shaped by windblown sediments are called ventifacts!
500
Poor maintenance of _______, which often leak, can trigger slides.
Poor maintenance of septic systems, which often leak, can trigger slides.
500
Which range of slope angles is associated with producing an avalanche?
30 to 45 degrees.
500
Sometimes, a large block of ice breaks off a continental glacier and the surrounding area is covered by sediments. When the block melts, it leaves behind a depression called ____________.
KETTLE LAKE! Sometimes, a large block of ice breaks off a continental glacier and the surrounding area is covered by sediments. When the block melts, it leaves behind a depression called a kettle (lake or hole).