Session 1 nature starter

Step 5. Complete the mind-map according to the text and fill in the columns.
is least active; …

Step 6. Compare the features and give explanation of each choice.
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QUESTIONS:
1.What does affect the soil texture?
2.What do clay soils also resist better than silty and sandy soils, as the particles are bonded to each other?
3.Where is the clay often washed downward through the soil profile and accumulates?
4.What kind of soil components are classed as rock and gravel?
4.According to the text, how is called the soil rather than mineral soil?
Glossary:
mineral constituents – mineral items soil behaviour – soil condition dissolved minerals – verb 1) (with reference to a solid) become or cause to become incorporated into a liquid so as to form a solution 2) [with obj.] close down or dismiss (an assembly or official body)
specific surface area – surface of special area
chemically active – precautions; precautionary measures (steps), safety tips
rock – [mass noun] the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil primarily quartz particles – starter quartz pieces optical microscope – a microscope using visible light, typically viewed directly by the eye rock – the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil gravel – a loose aggregation of small water-worn or pounded stones ■ a mixture of gravel with coarse sand, used for paths and roads and as an aggregate