Available Answers

1. 1.

   Answer the questions given by choosing the most appropriate alternative.

   1.  The troposphere has the largest concentration of _________________ .
      1.  oxygen
      2.  nitrogen
      3.  water vapour
      4.  atoms
   2.  When snow and rain fall together, it is called __________________ .
      1.  mist
      2.  sleet
      3.  drizzle
      4.  dew
   3.  Lines that join places that have the same _________________ are called isohyets.
      1.  rainfall
      2.  wind
      3.  temperature
      4.  sunshine
   4.  Which process is known as onion peeling?
      1.  Granular disintegration
      2.  Frost shattering
      3.  Block disintegration
      4.  Exfoliation
   5.  _______________ was called 'Global hub of technological innovation' by the UN?
      1.  Osaka
      2.  Jamshedpur
      3.  Detroit
      4.  Bengaluru
2. 2.

   Fill in the blanks.

   1.  Horizontal lines are called ______________ as they are numbered from South to North.
   2.  _____________ refers to the amount of moisture or water vapour present in the air.
   3.  The amount of cloud cover in the sky is expressed in ______________ .
   4.  Metamorphic rocks are mainly divided into two types on the basis of their ______________ .
   5.  The Tarapur Nuclear Power Plant is in the state of __________________ .
3. 3.

   Write (T) for the true and (F) for false.

   1.  Troposphere has high night-shining (noctilucent) clouds.
   2.  Convectional rainfall occurs in the equatorial region.
   3.  Degradation is the process of lowering down of the Earth's elevated landforms.
   4.  Ahmadabad is known as the 'Manchester of India'.
   5.  Tidal energy is generated from waterfalls.
4. 4.

   Differentiate between Trade winds and Katabatic winds.

5. 5.

   Differentiate between Nuclear power and Hydroelectric power.

6. 6.

   What is global warming? What are its effects?