Soils Exam 2 (Q #1 - 40)_12/8/14

Imagine a situation where a layer of sand overlays a layer of silt in a container that can allow water in from the bottom. Enough water is made available at the bottom of these layers so that it can move upwards from the bottom of the two layers, beginning with the silt layer at the bottom upward towards the sand layer at the top. What do you think will happen to this water movement?

Which of the following ions is NOT likely to increase in availability with increase in % Base Saturation of soil?

Which of the following best represents the characteristic(s) of soil that is/are related to the Hydrologic Cycle?

Which of the following is least likely to influence infiltration rate

Which of the following is most likely to influence the attraction of water molecules to the surface of soil particles?

Which of the following is MOST likely to influence the removal of excess water in the soil following a rain event?

CEC increases with increase in all of the following except one, which one is least likely to case an increase in CEC?

What is represented by X in the following equation: C6H12O6 + X = 6CO2 + 6H2O?

Which of the following colloids has the following characteristics: Long chains of carbon, net negative charge, and a lot of OH- groups on the surface?

Which of the following is NOT true about capillary water?

Which of the following is most likely to cause water to move from horizon B to Horizon A in a soil profile?

Significant decline in aerobic respiration occurs when less than ____ of the soil pores are filled with air

In general, only _____ of the global water supply is considered usable

In groundwater movement, what do you call a layer or unit that restricts ground water flow?

Which of the following has the least influence on how high water rises by capillary action in the soil?

Which of the following is NOT true about hydric soils?

Which of the following forces do plants need to overcome the most so as to be able to get the water they need from a soil where not all pores are occupied by water?

The layers that make up clay minerals are typically made up of a group of ____ individual sheets

The movement of water along the Soil-Plant-Atmosphere Continuum is mainly due to differences in ____ along the continuum.

What are Aerechyma tissues used for?

Which of the following forces is most likely to increase with elevation in a given area of the landscape?

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How many sides to Octahedral units that make up silicate clays have?

WHich of the following is NOT a factor that affect mineral stability?

Which of the following is NOT a basic cation?

WHich of the following types of colloid is MOST likely to be a major component of Andisols?

Which of the following is a type of colloid?

Biological Zerio occurs when temperatures are less than ____ degrees.

Which of the following is NOT true about hygroscopic water?

Which of the following is least likely to influence the amount of Throughfall during a rainfall event?

Which of the following is NOT likely to be considered a toxic gas?

What might be the main problem with using straw or woodchips as organic mulch?

Which of the following is true for both capillary action and matric forces?

Which of the following colloids has the following characteristics: More positive charges compared to negative charges and found in highly weathered soils of humid regions?

Infiltration is the movement of water _____ the soil and begins by filling _____ FIRST?

Which of the following is true about Plant Available Water?

Which of the following silicate clays is made up of one tetrahedral and one octahedral sheets

WHich of the following is NOT true about gravitational water?

What is the main process by which air moves in the soil?

Which of the following has the MOST influence on soil chemical properties?