Untitled Flashcards Set

There are “four” forces of erosion:

1.  gravity

2.  wind

3.  water

4.  glaciers

Geologist classify surface process of change into three patterns: 

1. Weathering = the breakdown of rock into smaller pieces. 

2. erosion =  the break down and then “removal” of material to other places 

3. Deposition = the breakdown of material such as sediments. 
   

What are the four forces of mechanical Weathering:

1. Changing pressure in the rock

2. Changing Weather

3. Moving water

4. abrasion, such as plant roots and animals.

What is an example of chemical Weathering? 

:_rust formation on iron

The Environmental conditions, the Composition of materials, the surface are and size all do what relation to Weathering? 

: direct relationship

What is “mass wasting” ? 

: the movement of rock and soil down

What are four types of mass wasting (mass movements) 

1.  creep

2.  slop

3.  slides
   

What is the cross-sectional profile of soil layers called?

: horizontal

What is the Angle of Repose? 

: steepest angle

What does the term “talus” describe? 

: loose rock at the bottom of the cliff

The “area of Land” where surface water flow from 

A higher area of elevation to a single are of lower 

elevation, river, lake, or ocean is called a? 

: drainage barrier

What is a Delta?

: fast moving water that drops on sediment

Why do Caves form? 

; water dissolves rocks like limestone

What is the “largest” cave in the world? 

: mammoth (it’s in Kentucky)

What is the “unique” geological formation called.. (the term)  that allows cave formations in the SE part of Minnesota? 

:karst

What type of “current” caused the sand on a beach to migrate and move down the beach?

:_long slope

What are the two types of Glaciers? 

1. valley

2. continental

What caused a “glacier” to form? 

: snow composed are millions of years

What are three types of  erosional deposition features created by continental glaciers?

1.  kettle

2.   morrain

3.   drumlin

What is “till”?

:locks left behind by glaciers

What are glacial erratics?

:rocks randomly left behind by glaciers

What were the Four major glacial advances through Minnesota during the last ice age?

1 Wisconsin

  2 kansas

3 Illinois

4 nebraska

What was the name of the large glacial lake that formed from Big Stone Minnesota into Canada after the last ice sheet melted back into Canada?

:_lake asaessy

How much (%) of the world is covered by Ice now? 

: 10%

What is the name of the river that drained the large lake North of Bigstone, described above? That carved the MN river valley now? 

: warren