Geomorphic Processes [NCERT Notes Class 11 Geography] Exemplar Solution
# Geomorphic Processes -
endogenic & exogenic forces causing physical stresses & chemical actions on earth materials & bringing about changes in configuration of surface of earth.
Geomorphic Agents -Running water, groundwater, wind, waves, glaciers etc.
Exogenic Forces
forces that derive their strength from earth’s exterior or are originated in earth’s atmosphere.
Examples– wind, waves, water etc.
Endogenic Forces- Internal forces
strength from earth’s interior & have a crucial role in shaping earth crust.
Examples – mountain building forces, continent building forces, earthquakes, volcanism etc.
#Earth Movements
Movements in earth’s crust - by endogenic or exogenic forces. Also termed as- Tectonic movements.
Topography- arrangement of natural & artificial physical features of an area.
Exp. The topography of the island.
________________________________________________________________________
Endogenic Forces – Internal forces
can be classified as slow movements (diastrophic) & sudden movements.
Examples – mountain building forces, continent building forces, earthquakes, volcanism etc.
Thsese are mainly land building forces.
Diastrophism : All process that move elevate or build up portions of earth's crust.
___________________________________________________________________________________________________________
1). Which one of the following processes is a Gradational process?
(a) Deposition (c) Volcanism
(b) Diastrophism (d) Erosion
Answer- Erosion
>Gradational -land is leveled off through erosion or transportation or deposition of sediments.
>Diastrophism -It refers to deformation of Earth's crust, and more especially to folding & faulting.
(2) Which one of following materials is affected by hydration process?
(a) Granite (c) Quartz
(b) Clay (d) Salts
Answer- Salts
>Granite : light-colored igneous rock (can be white, pink, or gray), grains large enough to be visible with unaided eye.
>Quartz is mineral composed of silicon & oxygen atoms. Chemical Formula SiO₂
(3) Debris avalanche can be included in the category of:
(a) Landslides (c) Rapid flow mass movements
(b) Slow flow mass movements (d) Subsidence
Answer- Rapid flow mass movements
>Debris avalanche : sudden catastrophic collapse (or landslide) from an unstable side of a volcano.
>Subsidence : either sudden sinking or gradual downward settling of ground's surface with little or no horizontal motion.
Difficult Words:
debris- scattered pieces of rubbish or remains.
endogenic & exogenic forces causing physical stresses & chemical actions on earth materials & bringing about changes in configuration of surface of earth.
Geomorphic Agents -Running water, groundwater, wind, waves, glaciers etc.
Exogenic Forces
forces that derive their strength from earth’s exterior or are originated in earth’s atmosphere.
Examples– wind, waves, water etc.
Endogenic Forces- Internal forces
strength from earth’s interior & have a crucial role in shaping earth crust.
Examples – mountain building forces, continent building forces, earthquakes, volcanism etc.
#Earth Movements
Movements in earth’s crust - by endogenic or exogenic forces. Also termed as- Tectonic movements.
Topography- arrangement of natural & artificial physical features of an area.
Exp. The topography of the island.
________________________________________________________________________
Endogenic Forces – Internal forces
can be classified as slow movements (diastrophic) & sudden movements.
Examples – mountain building forces, continent building forces, earthquakes, volcanism etc.
Thsese are mainly land building forces.
Diastrophism : All process that move elevate or build up portions of earth's crust.
___________________________________________________________________________________________________________
NCERT Exemplar Solution (With Extra Notes)
1). Which one of the following processes is a Gradational process?
(a) Deposition (c) Volcanism
(b) Diastrophism (d) Erosion
Answer- Erosion
>Gradational -land is leveled off through erosion or transportation or deposition of sediments.
>Diastrophism -It refers to deformation of Earth's crust, and more especially to folding & faulting.
(2) Which one of following materials is affected by hydration process?
(a) Granite (c) Quartz
(b) Clay (d) Salts
Answer- Salts
>Granite : light-colored igneous rock (can be white, pink, or gray), grains large enough to be visible with unaided eye.
>Quartz is mineral composed of silicon & oxygen atoms. Chemical Formula SiO₂
(3) Debris avalanche can be included in the category of:
(a) Landslides (c) Rapid flow mass movements
(b) Slow flow mass movements (d) Subsidence
Answer- Rapid flow mass movements
>Debris avalanche : sudden catastrophic collapse (or landslide) from an unstable side of a volcano.
>Subsidence : either sudden sinking or gradual downward settling of ground's surface with little or no horizontal motion.
Difficult Words:
debris- scattered pieces of rubbish or remains.
Comments
Post a Comment