Identifying Glacial Landforms: The three pictures below show a wide range of glacial features described in your textbook. First picture is from the Swiss Alps, second is from Iceland, and the third is from Glacier National Park.
Indicate which label above best matches each of the listed glacial features below.
Arete
Braided stream
Cirque
Col
Glacial trough
Hanging valley
Horn
Ice block
Kettle
Lateral moraine
Medial moraine
Outwash plain
Tarn
Till
Tributary Glacier
Trunk Glacier
Global Soil Distribution: Use the figure below to answer the following questions. For questions on latitudinal limits, give latitude estimated to the nearest degree. A larger version of the figure is also attached with this lab.
Distribution of Oxisols
What is the northern latitude limit of this soil order?
What is the southern latitude limit of this soil order?
What two latitude zones does this latitudinal range span (see Figure 2.11 in your textbook)
Distribution of Ultisols
What is the northern latitude limit of this soil order?
What is the southern latitude limit of this soil order?
Which two latitude zones (Figure 2.11) does this latitudinal range span in addition to the two identified for question 1c?
In the US, what clay rich soil order is only extensively found in southeast Texas?
Distribution of the four major Alfisol suborders
Which Alfisol suborder is only found in Boreal forest regions of the northern hemisphere?
Between the Udalf and Ustalf suborders, which is found in warmer climates?
Which Alfisol suborder is found in areas with a Mediterranean climate (in the northern hemisphere this is the northern Mediterranean coast and much of California, US)?
Which soil order has a high content of mineral quartz and is primarily associated with areas covered by the great northern hemisphere ice sheets of the Pleistocene Epoch?
Which soil order is associated with major grassland regions?
Which soil order is associated with major desert regions?
The world soil map does not include Histosols, Entisols, Inceptisols, and Andisols because these are of local occurrence. Which of these:
would you find on recent volcanic ash?
would you find in a peat bog?
would you find on a very recent sedimentary deposit (no B horizon)?
would you find on a relatively recent sedimentary deposit (B horizon starting to form)?
Carbon and Nitrogen Cycles: Carbon and Nitrogen are transferred through the biosphere in two important biogeochemical cycles. These cycles are illustrated and described in figures 16.6 and 16.9 in your textbook. Identify whether each process described below applies to Carbon or Nitrogen.
Stored in carbohydrates and used as fuel for producers, consumers, and decomposers
Returned to the atmosphere by burning or combustion
Returned to the atmosphere by denitrifying bacteria
Stored in coal deposits formed from bodies of ancient trees that did not fully decay before they were buried
Converted from many forms by decomposers into ammonia
Stored in natural gas and oil deposits probably formed from the burial of marine organisms in the geological past
Converted to ammonia (fixed) by nitrogen-fixing algae, bacteria, and legumes
Removed from the atmosphere and stored in carbohydrates by photosynthesis
Returned to the atmosphere or into water by the weathering of limestone
Returned to the atmosphere by bacteria in sediments and soil (denitrification)
Incorporated into the shells of marine organisms and deposited in thick seabed deposits
Transported into marine and aquatic ecosystems by runoff