Lecture 17: 2020-11-05

Exam 2: Tues, Nov 10

56 questions; multiple choice; 1.5hrs

Much of the material is definitions or just common sense.

Questions

• Definition of weathering
• Name of mineral that dissolves in carbonic acid
• Know different types of physical and chemical weathering
  • Oxidation, hydrolisis, …
  • What is exfoliation?
• Type of climate where chemical weathering is most effective
• Know different agents of erosion (running water, ground water, glaciers, wind)
  • Which is most effective today
  • Which was most effect 10k ago
• When it comes to mass wasting, what makes a slope stable (or unstable)
• Know different types of mass wasting
  • Slide vs Slump
  • Rockfall, …
  • What is a landslide
  • What is a creep
• What triggered landslide in Peru in 1970?

Running water (rivers)

• What are point bars
• What is saltation
• How does a river carry sediments (e.g. different loads)
  • dissolved, suspended, bed load
• What is river discharge
• What is a delta
• Largest river in North America
• What is a meander stream?
• What is oxbow lake
• Aswan Dam
  • Where are sediments deposited
  • What may have changed?
• What is the water table?
• What is a stalactite vs stalagmite
• What is porosity? Permeability?
• What is an artesian well?
• What is an aquifer
• What is aquiclude
• Why is rain water acidic?
• What is karst topography/landscape?
• Problems with excessive pumping of ground water

Glaciers

• What portion of earth surface is covered by glaciers
• What causes ice ages
• What’s been happening to glaciers for past 200 years
• Different types of glaciers
• Where is largest glacier in world today?
• What is a moraine? Terminal moraine? Medial moraine?
• What kind of moraine is south fork of Long Island
• What’s name of last ice age
• Why drill in ice in Antarctica? What’s in the core? Climate change
• What shape are glacial valleys
• When was the last advance of Pleistocene
• What happens to sea level when glaciers advance

Wind

• Eolian is overall term from Greek god
• Loess & dunes: wind deposits. What’s difference?
• What is deflation surface?
• What is desertification
• What are barchan dunes? Parabolic dunes