PPT-Components and Physical Properties of Soil

Unit Soil Science Lesson 3 Objectives Define aggregate the four components of soil mineral matter organic matter air and water bulk density Describe the basic characteristics of the three soil textures sand silt and clay. This material is covered in detail in many textbooks see Anderson 1998 2000 Asselin 1997 Eshelby 2000 Layton 1988 Lowry 1999 Mair and Birdsall 1996 Roskam and Lan 1997 Saarias 2006 Shevell 1988 Torenbeek and Wittenberg 2009 and Yechout and Bossert 2 (2.2)PHYSICAL PROPERTY. A physical property is any characteristic of a material that can be observed or measured without changing the composition of the substances in the material. . Viscosity, conductivity, malleability, hardness, melting point, boiling point, and density are examples of physical properties.. What are your thoughts on these pictures. Physical . Chemical. &. Properties of the soil. Soil. (1) Physical . Properties. This relates to the physical characteristics of the soil. . eg. Matter. Every element/compound is unique in some way from all others.. If you know enough about a substance, you can figure out what it is.. If you know what a substance is, you can know all types of things about it.. Physical Property. Definition/Description. Physical appearance. Color, size (volume), shiny, dull. State of. matter (at room temp). Density. Thermal conductivity. Electrical conductivity. Hardness. Ductility . Russell Yost, Ph.D.. Department of Tropical Plant and Soil Science. University of Hawai`i at . Manoa. Particle size determination in Soils of the Tropics. Some weathered soils of the tropics – those containing large amounts of hydrous . 6.P.2.3. Warm Up . This is an example of matter; . Can you identify it?. How would you classify it?. Think of ways scientists could classify different types of matter?. Classification of Gold. At room temperature. Chapter 2 Section 2. Describing matter. Matter: anything that has mass and takes up space. Mass – the amount of matter in something. Volume – the amount of space something occupies. Which of the following is matter?. Introduction to Agriculture. Soil Science. Unit 2. Physical Properties. Physical properties or characteristics of the soil determine to a large degree how useable and productive soil will be. Productivity of soil is affected by the physical properties of soil. 5 Components of Physical Fitness. #1. . . Cardiovascular Fitness. . - . ________________________(. also known as cardiorespiratory fitness) is the ability of . the_______, . lungs and . ________________ . Changes. The Difference. Physical Change . – . matter changes form . but is still made of the same molecules, typically . reversible. Chemical Change . – a . change in the molecules . occurs, . cannot be reversed. . Visual Evaluation of . Soil. Structure (VESS) . at . clod. . scale. .  . CoreVESS. Alice Johannes. 1,2 . & Pascal Boivin. 1. 1. University of . Applied. Sciences of Western . Switzerland. Soil Particles . Diameter (mm). Gravel . 2.00 mm. Pine gravel (very coarse sand). 200-1.00 mm. Coarse sand. 1.00-0.500 mm. Medium sand. 0.5-0.25 mm. Fine sand. 0.25-0.10 mm. Very fine sand. 1. . . INTRODUCTION. Civil and environmental engineering includes the conception, analysis, design, construction, operation, and maintenance of a diversity of structures, facilities, and systems. All are built on, in, or with soil or rock. The properties and behavior of these materials have major influences on the success, economy, and safety of the work.