FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 1: The Soils Around Us

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

Information about conditions at 2 to 4 meters deep in a soil is usually most helpful for understanding___.

A) how best to design a building foundation
B) the diversity of animal life in the soil.
C) the proper classification of the soil.
D) fertility requirements of most crops

E) A) and C)
F) B) and C)

Correct Answer

verified

Show Answer

Question 2

True/False

Review LaterAdd Note

Review Later

In humid regions most rainwater that soaks into the soil and is not used by plants eventually flows into rivers and streams.

A) True
B) False

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

The layers of contrasting material found when one digs a hole in the ground are called _______.

Most (usually 80% or more) of soil potassium and calcium can be found in the form of _________________.

Hydroxyl ion concentrations are greatest in a soil solution with a pH value of ______.

The mineral particles in soil consist of sand,silt,and clay.

For any soil in which it is present,the C horizon is the parent material for the B horizon.

While many organisms depend on the soil for nutrients and water,only a few very specialized organisms live in the soil itself.

The dark brown and black humus found in many soils does not mix well with clay minerals so there is very little contact between these two soil components.

Practices that tend to increase the amount of organic matter in soils would be expected to reduce the global greenhouse effect.

Which of the following is (are) essential plant nutrients?

Where organic matter constitutes only 1 or 2 percent of the soil by weight,it has only negligible influence on soil properties.

Natural soils (as opposed to modern farm soils)can recycle organic compounds,but not inorganic elements.

Which of the following is considered to be a plant macronutrient?

Most of the water flowing in rivers passed through a soil profile or over soil surfaces before reaching the river.

Most,if not all,of the nutrient supply stored in a fertile soil is in forms readily available to plants.

Soil,like concrete and steel,is a standard construction material.Its properties are well characterized and predictable so that standard building foundation designs can be used uniformly at all building sites of a given topography.

Which of the following pH values represents a neutral condition?

The amount of different sizes of mineral particles in a soil defines the soil ________.

Soil horizons,like alluvial sediments,generally have a horizontal orientation,regardless of the slope of the land.