Chapter 7 Soil Science Quiz 1

The water molecule is a polar molecule. The polarity allows water molecules to form ________ ______ bond with each other.

Identify THREE (3) properties of water molecule:

I. Cohesion of water molecule

II. Moderation of temperature

III. Solvent of life

IV. Adhesion of water molecule

• A. I, II and III

• B. I, II and IV

• C. I, III and IV

• D. II, III and IV

Water is attracted to the glass tube by _______ so a film flows up the side of the tube, while _______ drags more water along

Identify THREE (3) categories of soil water:

I. Gravitational water

II. Cappillary water

III. Hygroscopic water

IV. Physically combined water

• A. I, II and III

• B. I, III and IV

• C. I, II and IV

• D. II, III and IV

A farmer planned to plant leafy vegetables in his farm. One of the steps involve in the land preparation is the determination of soil water content. Provide one method to determine soil water content.

• Gravimetric measurement

• Potential measurement

• Resistance unit

• Potentially measurement

_____ ______ is a measure of how hard it is to break the surface of a liquid.

__________ _______= [moist soil (g)-oven dry soil(g)]/oven dry soil (g)
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= Gravimetric water content X (soil bulk density/water density)

____________ is an instrument consist of a porous cup connected to a manometer through a water filled tube and have a measurement range of 0 - <-1000 cm.

_________ ____ is used to measure the electrical resistance between two electrodes.