Structure Of The Earth

The Earth’s Outer Structure The Earth’s outer structure consists of four zones or layers: Lithosphere: The solid part of the Earth, composed of rocks and minerals, representing 30% of the Earth’s surface. Importance: Forms the foundation for human settlement. Source of all mineral resources. Supports transportation infrastructure like roads, railways, and airports. Facilitates farming activities. […]

The Earth’s Outer Structure

The Earth’s outer structure consists of four zones or layers:

Lithosphere:

    1. The solid part of the Earth, composed of rocks and minerals, representing 30% of the Earth’s surface.
    2. Importance:
    3. Forms the foundation for human settlement.
    4. Source of all mineral resources.
    5. Supports transportation infrastructure like roads, railways, and airports.
    6. Facilitates farming activities.
    7. Location for various human activities such as mining and trading.

 

Hydrosphere:

  1. The liquid portion of the Earth, encompassing oceans, seas, rivers, lakes, etc., covering 70% of the Earth’s crust.
  2. Importance:
  3. Provides water for domestic use.
  4. Acts as a medium for transportation.
  5. Supplies water for industrial purposes.
  6. Sustains diverse aquatic life, including fish and prawns.
  7. Offers employment opportunities.
  8. Serves as a tourist attraction.
  9. Contributes to the generation of hydro-electric power (HEP).

 

Atmosphere:

  1. The gaseous portion of the Earth, comprising 78% nitrogen, 21% oxygen, 0.03% carbon dioxide, and 0.097% rare gases.
  2. Importance:
  3. Acts as the habitat for some living organisms.
  4. Provides oxygen for respiration.
  5. Supplies carbon dioxide for photosynthesis.
  6. Facilitates combustion by providing oxygen.
  7. Serves as a medium for transportation.
  8. Supplies nitrogen for protein synthesis in plants.

 

Biosphere:

  1. The zone of the Earth where living things are found.
  2. Importance:
  3. Plants in this zone provide food for humans.
  4. Offers employment opportunities.
  5. Supplies raw materials.
  6. Plays a crucial role in balancing and purifying the atmosphere.

Related Posts:

Calculation Of Distances And Local Time

Latitude & Longitude

Earth As A Planet

The Solar System

Geography | Meaning, Scope And Value

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