ICSE Solutions for Class 9 Geography – Effects of Pollution Chapter 18

Exercises I. Short Answer Questions. Question 1.How does noise pollution affect animals ?Answer:Noise from industries, railways, crackers, explosions and commotion in the cities and aircraft, affect animals, birds, mice, fishes and domestic animals. Birds avoid migrating to places where noise level is above 100 dB. The noise emissions caused by supersonic aircraft and railways may […]

ICSE Solutions for Class 9 Geography – Pollution

Exercises I. Short Answer Questions Question 1.What is environmental pollution ?Answer:Environmental pollution refers to any unfavourable alteration of our surroundings, wholly or largely as a by product of man’s actions. These changes may affect man and other organisms. Question 2.Give the definition of a pollutant.Answer:A pollutant is a product released into the biosphere disturbing the […]

ICSE Solutions for Class 9 Geography – Humidity

Exercises I. Short Answer Questions. Question 1.Define the following terms : (a) Precipitation(b) Evaporation(c) Condensation(d) Humidity(e) Latent heat. Answer: (a) Precipitation — It is process by which condensation in different forms falling on the ground e.g. rainfall, snowfall, drizzle, sleet and hail etc.(b) Evaporation — It is the process of converting water into water droplets […]

ICSE Solutions for Class 9 Geography – Composition and Structure of the Atmosphere

Exercises I. Short Answer Questions. Question 1.What is known as atmosphere ?Answer:The blanket of air upto 1500 km surrounding the earth is known as atmosphere. Question 2. State the gaseous composition of the atmosphere.Answer:The atmosphere consists of 78% Nitrogen 21% oxygen and 1% other gases. Question 3.Mention any three functions of the atmosphere.Answer: Air has […]

ICSE Solutions for Class 9 Geography – Weathering

Exercises I. Short Answer Questions. Question 1.What is weathering ?Answer:Weathering involves disintegration or decay of solid rock due to change in temperature and weather and their impact on the composition of rock. Question 2.Give one point of difference between physical and chemical weathering.Answer:Physical weathering does disintegration of rock without chemical reaction and the chemical weathering […]