Geography 130
Introduction to Physical Geography
Exam 3 Review Questions
- Name two processes of physical weathering. Briefly describe
how they act to break down earth materials.
- Name two processes of chemical weathering. Briefly describe
how they act to break down earth materials.
- What are some of the byproducts that can be produced by chemical
weathering of rock?
- Chemical weathering is strongest in tropical environments.
Why?
- What is a karst landscape? Name a few of the conditions needed
to cause karst landforms.
- Define "shear stress" and "normal stress." What happens to
each when the slope angle increases?
- What does "angle of repose" mean? What determines the angle
of repose for fine sediments and soil?
- Name two environmental factors that can cause slope instability
and trigger mass wasting.
- Name two human activities that can cause slope instability and trigger
mass wasting.
- What is soil creep? What are some of the visible effects
of soil creep?
- What is solifluction? Where does solifluction occur?
- What is a debris flow? Where do debris flows commonly oocur?
- Define each term in the following equation: Precipitation
= Evapotranspiration + Runoff +/- Storage.
- Name two environmental factors that cause increased surface runoff
(instead of baseflow).
- Name two environmental factors that cause increased baseflow (instead
of surface runoff).
- From a management perspective, baseflow is considered preferable
to surface runoff. Why?
- Name one human activity that increases surface runoff. Name
one human activity that increases base flow.
- Name and describe the three types of sediment load carried by rivers.
- What type of sediment do meandering streams carry? Where are
meandering streams common?
- What type of sediment do braided streams carry? Where are
braided streams common?
- What are oxbow lakes, and how do they form? What happens to
oxbow lakes over time?
- What causes streams to downcut into their floodplains? Name
a landform produced by downcutting.
- What causes deltas to increase in size? Why are some deltas
(like the Mississippi delta) shrinking in size?
- What is eustasy, and how does it differ from relative sea level
change? Name two causes of eustatic sea level change.
- How much has sea level risen since the last ice age? What
evidence along coastlines confirms this?
- What is shoaling? In what depth of water does it occur?
- What is wave refraction? How does it influence erosion and
deposition along coastlines?
- What is beach drift? How does it influence landforms along
coastlines?
- What happens to erosion and deposition patterns when a jetty is
built from a beach into the shoaling zone?
- Describe the formation of these landforms: sand spits, estuaries,
sea stacks, wave-cut platforms, atolls.
- What determines the location of coral reefs? Give an example
of a place with a coral reef coast.