Environmental Chemistry

Homework Assignment 14 (24 points)

1. Match the following:

   (1) Metamorphic rock	(A) Produced by the precipitation or coagulation of dissolved or colloidal weathering products
   (2) Chemical sedimentary rocks	(B) Contain residues of plant and animal remains
   (3) Detrital rock	(C) Formed from action of heat and pressure on sedimentary rock
   (4) Organic sedimentary rocks	(D) Formed from solid particles eroded from igneous rocks as a consequence of weathering

2. In what sense may volcanoes contribute to air pollution? What possible effects may this have on climate?
3. Explain how excessive pumping of groundwater might adversely affect streams, particularly in regard to the flow of small streams.
4. Match the following:

   (1) Groundwater	(A) Water from precipitation in the form of rain or snow
   (2) Vadose water	(B) Water present in a zone of saturation
   (3) Meteoric water	(C) Water held in the unsaturated zone or zone of aeration
   (4) Water in the capillary fringe	(D) Water drawn somewhat above the water table by surface tension.

5. What are four important effects of organic matter in soil?
6. Match the following:

   (1) Subsoil	(A) Weathered parent rocks from which the soil originated
   (2) Gravel	(B) Largest particle size fraction (2-60 mm) according to the United Classification System
   (3) Topsoil	(C) B horizon of soil
   (4) C horizon	(D) Layer of maximum biological activity in soil that contains most of the soil organic matter.

    

   

   ENV 440 Homework

Environmental Chemistry -- ENV 440
Last Updated:  04/27/2004