Geography

Biosphere: Lithosphere, Hydrospher

By Examguru / 06 Oct, 2023 / Download PDF

Biosphere: Lithosphere, Hydrospher

Biosphere

  • The part of the Earth where life exists is called the Biosphere ('bios'means 'life').
  • The Earth is the only planet of the solar system that supports life. Life is possible because of its unique lithosphere, hydrosphere and atmosphere.

Lithosphere

  • The uppermost layer of the Earth's crust which is capable of supporting life is called Lithosphere.
  • The Lithosphere (or land) covers two-sevenths or 29.22% (14,90,41,182 sq. km) of the total surface are. the earth.

Hydrosphere

  • Hydrosphere (or sea) covers five-sevenths or m accurately 70.78% (36,10,59,226 sq. km) of the total surface area of the earth.
  • Water is freely available in the gaseous, liquid and solid state.
  • It is necessary for carrying out chemical reactions within the bodies of the living organisms.
  • Water also dissolves and transports nutrients from the soil to the plants.
  • It is used by plants for making food.

More Related Articles

Introduction - Geography

The word Geography was first used by a Greek scholar Eratosthenes (276-194 B.C.). The word Geography has been derived from two Greek words- Geo and Graphos, which jointly means the description

examguru by ExamGuru

The Solar System & Universe

Universe The universe is commonly defined as the totality of everything that exists, including all physical matter and energy, the planets, stars, galaxies and the contents of intergalactic

examguru by ExamGuru

Continents of the World

Asia, Africa, North America, South America, Europe, Australia and Antarctica are the seven continents. Asia: The word 'Asia' is derived from the word 'Asu' (of Hibru language), w

examguru by ExamGuru

Oceans on The Earth

There are four oceans. In order of their size, they are: Pacific Ocean, Atlantic Ocean, Indian Ocean and Arctic Ocean. Pacific Ocean The explorer Ferdinand Magellan, who circumnaviga

examguru by ExamGuru

Time & Zones (Latitude and Longitude)

Latitude and Longitude Any location on Earth is described by two numbers- its latitude and its longitude. Latitude On a globe of the Earth, lines of latitude are circles of different siz

examguru by ExamGuru

Coriolis & Different Effect

Coriolis Force The invisible force that appears to deflect the wind is the Coriolis force. The Coriolis force applies to movement on rotating objects. It is determined by the mass of the object

examguru by ExamGuru

Atmosphere

The envelope of air that completely surrounds the earth is known as atmosphere. The atmosphere extends to about 1000 km from the surface of the earth. But 99% of the total mass of the atmosphere

examguru by ExamGuru

Winds, Clouds, Rainfall, Islands & Rocks

Winds Wind is the movement of air caused by the uneven heating of the Earth by the Sun. Sometimes wind blows gently, refreshing us. At other times, it blows strongly creating storms th

examguru by ExamGuru

Earthquakes and Volcanoes

Earthquakes The sudden tremors or shaking of the earth's crust is called an earthquake. When a part of the earth's surface moves backward and forward or up and down, the earth's

examguru by ExamGuru

Various Landforms – Mountains, Plateaus, Plains, Glaciers, Rivers, Groundwater etc. / India Physical Features

Mainly there are three types of landforms - Mountains, Plateaus, Plains. Mountains The height of mountains is over 600 m and haveconical peaks. On the basis of origin there are four types of

examguru by ExamGuru

Toppers

anil kumar
Akshay kuamr
geeta kumari
shubham