Mass Movement
Define mass movement.
What is the downslope movement of material due to the force of gravity?
Define desert.
What is a place where there is not enough precipitation to support abundant plant life?
Define glacier.
What is a large moving mass of ice on land?
Define ice age.
What is the period of time during which there is a significant amount of glaciation on the Earth's surface?
Define deflation hollows.
What is deflation removing all topsoil from an area creating a shallow depression?
Provide the two variables that affect mass movement.
What are water and vegetation?
Describe the process by which desert pavement forms.
What is deflation that picks up small particles of sediment, leaving heavy sediment behind?
Provide the two types of glaciers.
What are alpine glaciers and ice sheets?
Give the word for the short periods between ice ages.
What are interglacials?
Explain the difference between ice and glacial ice.
What is glacial ice forming from snow crystals under pressure that allow for slight deformation without breaking, while ice forms from liquid water?
Name the mass movement:
Adventuring Angie is walking up a mountain trail. As she's walking, a mass of small rocks and medium boulders begin stumbling towards her. She climbs a tree to escape its path.
What is a landslide?
Give the three ways wind erodes sediment in the desert.
What are saltation, deflation, and abrasion.
Describe the two ways glaciers erode rock.
What is plucking (water expanding in cracks) and abrasion (glaciers scratching the surface of the rock)?
Describe the pattern of glaciation in Earth's past.
What is a cyclical pattern of short and long periods of glaciation?
Name the mass movement:
Walking downhill through the woods, Adventuring Angie notices that the trees are oddly curved towards their base, as if they had been slowly pushed along by the earth. She vaguely wonders why but continues on her newly discovered path.
What is a creep?
Name the mass movement:
While on a safe path, Adventuring Angie comes to a hilly region where she notices a series of curved depressions in the side of the hill. She muses that the curves resemble a series of steps.
What is a slump?
A __________ is a stream that only flows occasionally in the desert.
What is an ephemeral stream?
Explain why glaciers form near the Equator.
What are the high elevation in mountains?
Describe the fossils found in ice-age deposits.
What are the animals that we recognize and are familiar today?
*drawing must include wind direction and labels
Provide the connection between wild fires and mass movement.
What are wildfires that destroy vegetation, which eliminates plant roots.
Draw and label how sand, silt, and clay are transported by wind.
*must include saltation, creep (abrasion), and deflation (suspension).
Give a geographic example of an ice sheet and an alpine glacier.
Ice sheet: Greenland, Antarctica
Alpine glacier: Andes, Alps, Himalayas, Rocky Mountains
Provide 5 pieces of evidence for past glaciation.
- erratics
- striations/grooves
- moraines
- depositional landforms
- U shaped valleys
Give the word that describes the breaking off of a glacier into water, becoming an iceberg.
What is calving?