1.7 Urbanisation: Explain causes and consequences of urbanisation.

1. Population and Settlement – Urbanisation

1.7 Urbanisation: Causes and Consequences

Urbanisation is like a giant magnet that pulls people, jobs, and services into cities. Think of a city as a bustling hive 🐝 where everything is close together, making life faster and more connected.

Causes of Urbanisation

• 💼 Economic opportunities: Jobs in factories, offices, and services attract people from rural areas.
• 🏥 Better services: Hospitals, schools, and transport are often better in cities.
• 🌱 Industrialisation: The shift from agriculture to industry creates factories that need workers.
• 🚗 Improved transport: Roads, railways, and airports make commuting easier.
• 🔄 Urban sprawl: As cities grow, suburbs appear, drawing more residents.

Consequences of Urbanisation

• 🏠 Housing pressure: More people means more demand for homes, often leading to slums or high rents.
• 🚧 Infrastructure strain: Roads, water, and electricity can become overloaded.
• 🌍 Environmental impact: Increased pollution, loss of green spaces, and higher carbon footprints.
• 🤝 Social change: Diverse cultures mix, creating new social dynamics but also potential conflicts.
• 📈 Economic growth: Cities become hubs of innovation, boosting national GDP.

Population Density Formula

Population density helps us understand how crowded a city is:

$D = \frac{P}{A}$

Where $P$ = population and $A$ = area in square kilometres.

Case Study: Nairobi, Kenya

Nairobi grew from a small colonial outpost to a megacity of over 4 million people. Its rapid urbanisation has led to:

1. Expansion of informal settlements (slums) like Kibera.
2. Increased traffic congestion and air pollution.
3. Creation of tech hubs (e.g., Nairobi’s “Silicon Savannah”).

Comparative Table: Causes vs. Consequences

Key Takeaway

Urbanisation is a double‑edged sword: it can drive economic progress and cultural exchange, but also creates challenges like housing shortages, environmental strain, and social inequality. Understanding both sides helps us plan smarter, more sustainable cities.