Download App

Weathering — Geography STD 9 — Question

ICSE BoardEnglish MediumSTD 9GeographyWeathering4 Marks
Question
Distinguish between physical and chemical weathering.
✓

Answer

Physical Weathering :
  1. Rock disintegration without any change in chemical constituents of rocks takes place.
  2. Factors such as temperature, moisture, pressure cause the physical break-up of rocks.
  3. It takes place in hot dry and cold areas due to rapid temperature changes.
  4. Rocks are affected to great depths.
  5. Its agents are temperature and moisture.
Chemical Weathering :
  1. Minerals in rocks are dissolved or altered.
  2. Temperature, moisture, etc., cause minerals in rocks to dissolve in water or convert them into other minerals.
  3. It takes place in hot and humid areas due to the chemical action of minerals in rocks.
  4. It mostly takes place near the surface of the earth.
  5. Its agents are solution, oxidation, carbonation, and hydration.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[4 Mark Question Answer]" from Weathering→Weathering — all question types→Geography STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

Describe the distribution of volcanoes.
→
Explain the monsoon climate type region under the following heads : Vegetation
→
Explain the swinging of the pressure belts.
→
The distance between two consecutive meridians is equal to about 111 kilometers only at the equator.
→
Cyclones and Anticyclones.
→
Earth as a whole does not expand.
→
Give a brief account of ‘Plate Tectonics’.
→
Describe the distribution of volcanoes in the world. ### Name the important belts of volcanoes.
→
Give an example each of the following:
(i) Fold mountains
(ii) Block mountain
(iii) Volcanic plateau
(iv) Structural plain
→
Each day a tide is delayed by 26 minutes. : Give reasons
→