Question

Write the difference between:

(i) Exogenic and endogenic forces

(ii) Orogenic movements and epeirogenic movements

(iii) Physical weathering and chemical weathering.

Answer 1

(i)

S.no.	Exogenic Forces	Endogenic Forces
1.	The external forces are known as Exogenic forces.	The internal forces are known as Endogenic forces.
2.	Solar energy is the sole driving force behind all the Exogenic processes. E.g. Erosion, Flood, Mining, etc.	Gravity is the sole driving force behind all the Endogenic process. E.g. Earthquake, Volcanic Eruption, etc.

(ii)

S.no.	Orogenie Movements	Epeirogenic Movements
1.	In the process of Orogenie the crust is severely deformed into folds.	Due to Epeirogenic they may be single deformation.
2.	It is mountain building process.	It is continental building process.
3.	It affects long and narrow belt of earth’s crust.	It involves uplift or wrapping of large parts of earth’s crust.

(iii)

S.no.	Physical Weathering	Chemical Weathering
1.	Physical force disintegrates the rocks.	Rocks are decomposed by chemical changes.
2.	No chemical change occurs.	Not much physical change occurs but chemical change occurs due to air and water.
3.	More effective in dry and cold areas.	Effective in hot and hum 1 areas.
4.	Insulation, frost and pressure are the agents.	Oxidation and reduction arbonation, hydration and soil are the agents.
5.	Rocks are affected at the greater depth.	Rocks are affected on the surface only.
6.	Even the strong minerals are affected by physical weathering.	Chemical resistance minerals are not affected.