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प्रश्न
Explain the following terms.
Colloids
उत्तर
Colloids: Colloids are extremely tiny particles which are so small that they can not be seen by optical microscope ‘ and remain suspended indefinitely in water. They have the property of being electrically charged and can attract and hold ions of calcium, magnesium and potassium, known as bases. These bases are required by plants for their growth. – Soil colloids are also useful in holding water in the soil. When present in large quantities, they make the soil sticky and tough so that it is difficult to cultivate.
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संबंधित प्रश्न
What is gradation? Describe the two processes involved in gradation.
What is weathering?
Give one example of rapid mass movement.
What is known as Sheet Wash?
Give a technical term for the following:
Disintegration or decomposition of rock.
Give a technical term for the following:
Peeling off of the outer layer of rock through contraction and expansion.
What is weathering? Illustrate the process graphically.
What do you understand by the following term:|
Exfoliation
Describe the work of plants as agents of weathering.
Give a geographical reason:
Effect of mass movement will be greater along the western slope of the Sahyadri's than the eastern slope.
