Test yourself on Urban Sustainability and Megacities with exam style questions, marked instantly.

Flashcards that come back just before you would forget them.

A revision plan that remembers what you know and shows what to do next.

See which topics you have nailed and which need another look.

🧠 Memory Aid: TRAFFIC

Use the acronym TRAFFIC to remember the key challenges facing megacities. Each letter gives you a topic to write about in an exam answer:

T — Traffic congestion (Mumbai: 10 km/h; Dhaka: 7 km/h — costs Bangladesh 3% of GDP annually)
R — Resources under strain (water, electricity, food systems overwhelmed by rapid growth)
A — Air pollution (Mumbai PM2.5 levels 5× WHO limit; 7 million deaths/year globally from urban air pollution)
F — Flooding and environmental risk (Dhaka: 70% below 6m sea level; Mumbai 2005: 944mm in 24 hours)
F — Finances and informal economy (60% of LIC urban workers in informal economy without legal protections)
I — Informal settlements / Infrastructure gap (1 billion people in informal settlements globally; infrastructure always lags population)
C — Congestion of services (schools, hospitals, waste collection overwhelmed — Dhaka generates 35,000 tonnes waste/day)

For case study data, use this quick memory frame:

Mumbai numbers to know: 21.4m population | 6.6% of India's GDP | Dharavi: 1m people in 2.4km² | £1bn Dharavi economy | 15,000 factories | 10 km/h traffic | 944mm rain July 2005 | Metro Line 3: 33.5km
Dhaka numbers to know: 22.5m population | 300,000 new arrivals/year | 40% in bastis | 7 km/h traffic | 35,000 tonnes waste/day | Rana Plaza 2013: 1,134 dead | BRAC: 100m people reached
Global facts: 37 megacities in 2024 | 90% of growth in LICs/NEEs | 1 billion in informal settlements | 2050: Africa's urban population triples

Make this stick

Signing in gives access to all PrepWise features.