Question
click below
click below
Question
Normal Size Small Size show me how
Chapter 5, lesson 2
Question | Answer |
---|---|
What is a mixture of weathered rock, decayed organic matter, mineral fragments, water and air? | Soil |
How much of the volume of soil is made of solid materials? | Half |
Soil also contains water,other liquids and what? | Gases (air) |
What are pores? | Small holes in the soil |
What fills the pores in soil? | Water and gases |
How can water flow through soil so easily? | Because it has pores |
What do you call the movement of water through pores? | Porosity |
The solid part of soil once -living organism is called what? | Organic material |
Organic matter holds water and ? | Nutrients |
What is inorganic matter? | Soil made from materials such as rock fragments that have never been alive |
How many factors are their in soil formation ? | Five |
What is the starting material of soil called? | Parent material |
What is parent material made up of? | Rocks or sediments that that weathers and forms soil |
The particle size and type of parent material can determine the what? | Properties of soil, climate, |
Can soil rapidly form in warm or cool areas? | Warm areas |
What is topography? | The shape and steepness of the landscape |
What do you call all the organisms that live in a region? | Biota |
Soil formation is a constant but what process? | Slow |
What are horizons? | Layers of soil formed from the product of weathering |
How many horizons are common to most soil? | Three |
What is the A-horizon? | Soil you see when You dig a shallow hole |
What is B-horizon? | Soil that contains a great deal of clay materials |
What is C-horizon? | Soil that consists of parent material |
The properties of a soil determine the best use of what? | The soil |
How many major soil types in the world? | 12 |
What does soil type depend partly on? | Climate |