earth science test notes

key concepts
18.1
. water vapor is most important gas in the atmosphere
. the process of changing state requires energy two be transferred in the form of heat
18.2
. when air is allowed to expand it cools, and when it is compressed , it warms
. for condensation of water to occur the air must be saturated
18.3
. cloud are classified on the basis of their form and height
. fog is a cloud with its base or close two the ground

My test

for my test I wasnt that prepared and I could have studied more in order to prepare better but I did get a good grade

soil







While a nearly infinite variety of substances may be found in soils, they are categorized into four basic components: minerals, organic matter, air and water. Most introductory soil textbooks describe the ideal soil (ideal for the growth of most plants) as being composed of 45% minerals, 25% water, 25% air, and 5% organic matter. In reality, these percentages of the four components vary tremendously. Soil air and water are found in the pore spaces between the solid soil particles. The ratio of air-filled pore space to water-filled pore space often changes seasonally, weekly, and even daily, depending on water additions through precipitation, throughflow, groundwater discharge, and flooding. The volume of the pore space itself can be altered, one way or the other, by several processes. Organic matter content is usually much lower than 5% in South Carolina (typically 1% or less). Some wetland soils, however, have considerably more organic matter in them (greater than 50% of the solid portion of the soil in some cases).