Geography
Look at the figure on the side and answer the questions:
(i) Label the parts: (1), (2), (3), (4) and (5).
(ii) Name the state (solid, liquid or gas) in which each part exists.
(iii) Which part of the earth is suitable for human habitation? Why?
Answer
(i) The parts are:
(1) Atmosphere
(2) Crust
(3) Mantle
(4) Core
(5) Ocean
(ii) The states are:
(1) Atmosphere - Gaseous state
(2) Crust - Solid state
(3) Mantle - Semi-molten and solid state
(4) Core - Solid state
(5) Ocean - Liquid state
(iii) Crust is suitable for human habitation due to favourable conditions for survival, i.e. atmosphere for air, lithosphere for settlement due to ideal temperature, hydrosphere for hydrological cycle for providing rainfall and fresh water bodies on the earth and oceans for navigation and trade routes etc.
Related Questions
Give a geographical reason for each of the following:
(i) Temperature starts rising gradually towards the interior of the earth.
(ii) The asthenosphere is in a semi-molten state.
(iii) The inner core of the earth is in a solid state.There are two transitional zones between the two consecutive layers of the interior of the earth. Name them and state their chief characteristics.
Which layer is responsible for earth's magnetic field? Why?
State two chief characteristics of the earth's crust.