Group C

3. Answer the following questions briefly (the choice is to write the question)

   3.1 What is denudation?

   Ans. Denaturation is the sum of both static and dynamic activities.  Under this, the combined activities of weathering, mass wasting, transmission, erosion, deposition, etc. are studied.  Weathering + erosion + erosion = denudation

    

   3.1 (a) What is “inversion of temperature?

   Ans. Inversion of temperature: Generally, in the upper layers of the atmosphere, the temperature decreases according to height.  But sometimes at low altitudes and for a short time, this condition reverses and the temperature starts increasing instead of decreasing with height.  This is called Inversion of Temperature or Negative Lapse Rate.  Which is seen in the mountainous parts during the quiet long nights of winter.

    

   3.2  What is an Inter-tropical convergence zone?

   Ans. ITCZ – Intertropical convergence zone (I. T. C. Z): The region in the equatorial region where the northeast and southeast winds meet each other is called the inter-tropical convergence zone.  Which are the cradles of cyclones.

    

   3.2 (a) State the definition of ocean current.

   Ans. Ocean Currents:- Like rivers flowing on land, the flow of water flowing in a certain direction from one part to another on the surface of the ocean and ocean is called a current.

    

   3.3 Define waste management.

   Ans. The emission and disposal of waste materials are a serious problem, the organization formed to reduce their emissions and dispose of them safely is called waste management.

    

   3.3 (a) What do you mean by radioactive waste?

   Ans. Radioactive Waste: – In the present world, radioactive materials are being used in the field of obtaining energy, manufacturing weapons, and in the medical field.  Radioactive materials always undergo the process of fission and their waste materials are also more or less radioactive.  These substances do not get exhausted quickly and remain for hundreds to thousands of years and if they reach the human body in any way, they cause great harm.  They are called radioactive waste.

   Examples are molecular radiation particles and charitable gas, methyl isocyanate gas, etc.

    

   3.4 Where is the Malnad region located?

   Ans. The Malnad region is situated in the southwest part of the Karnataka plateau.

    

   3.4 (a) Name two watershed regions of India

   Ans. Aravalli Mountains and Vindhya Mountains.

    

   3.5 What do you mean by millet crops?

   Ans. Cultivation of nutritiously complete cereals in less rainfall and less fertile land is called coarse cereals in India such as – Ragi, Maduva, Jowar, Bajra, Maize, etc.  It is also called the grain of the poor.

    

   3.5 (a) Name one agro-based and one forest-based industry in India.

   Ans. An agro-based industry in India is the cotton textile industry and a forest-based industry is the paper industry.

    

   3.6 State the definition of satellite imageries.

   Ans. “The image taken of the whole or part of the earth using an artificial satellite is called satellite imagery.”

    

   3.6 (a) State the use of Representative Fraction (R.E.).

   Ans. The display is useful in revealing the actual distance of the different earth in the proportional distance and in reducing the large distance and enlarging the small distance.