Exam 4: The Terrestrial Environment

Soil formation begins with the ________ of rocks and their minerals.

Soils rich in iron oxide are

The mechanical destruction and/or chemical modification of rock into smaller particles is called

Soils on ridgetops are generally drier than valley soils.

The greater the depth of water percolation,the greater the depth of weathering and soil development.

The largest particles of soil are referred to as ________.

The soil in a particular area is arranged in layers called horizons that vary in texture,structure,and consistency from one another.

In temperate deciduous forest,light penetration to the ground is greater during summer than during winter.

Temperature fluctuation is greater in aquatic environments than in terrestrial environments.

In forests,most of the organic matter that enters the soil comes from plant roots.

All the following factors affect the attenuation of light in water,except

Soil is formed from the layer of unconsolidated debris overlaying hard,unweathered rock referred to as

More rainfall enters the soil on steep slopes than on level land.

The amount of water a soil holds at field capacity is greatest for

The rocky area at the bottom of the photo would be considered which section of a soil profile?

The movement of solutes through the soil is known as ________.

If a tree 50 meters (m)high has 30,000 leaves,the surface area of the leaves is 300 m2,and the amount of ground covered by the tree's canopy is 75 m2.The leaf area index (LAI)is

The general relationship between available light and leaf area index (LAI)is described by

When the amount of water in soil exceeds what the pore space can hold,the soil is

Which of the following is a common soil anion?