Read the summary and the most important questions on An Introduction to Physical Geography and the Environment | 9780273740698 | Joseph Holden

• 1 Soil in the environment

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• What are soil phyiscal properties

  Properties who you can see, feel, taste and smell

• What can you see by observing soil colour?

  You can estimate organic matter content, iron content, soil drainage and soil aeration.

• What is the influence of soil physical properties?

  It shows how soils function in an ecosystem ad how they can be managed

• 1.1 Physical properties of soil - Soil colour

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• What kind of colour has a soil with a high amount of organic matter

  Black or dark brown 

• Why is colour used to determine soil?

  To determine the drianage characteristics

• What kind of colour has well drained soil where iron is oxidezed

  Reddish or yellowish colour

• What kind of colour has water logged soils, where the iron is reduced

  blue colour of the soil

• What are the three catagories of the Musell colour chart?

  Hue: dominant colour (redness or yellowness), Value: degree of darkness or lightness, Chroma: purity or strength of the colour.

• 1.1.2 Soil texture

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• What is fine earth?

  Mineral particles in the soil which are greater than boulders (600mm) and stones (greater than 2 mm)

• What is Cation exchange capacity

  water holding capacity